Je revais d’un autre monde by go_fishboys
As far as Merlin Emrys is concerned, being magic and hiding it from everyone makes him different enough, he doesn’t need teenage pregnancy to deal with on top of everything else! Now he not only has to break the secret of his magic to Arthur but also the news that he is pregnant.
One year, eight months and thirteen days by fatal_scribbles
Arthur hasn’t seen Merlin since he left, one year, eight months and thirteen days ago.
Knocked Up Again by Fletcher
His father had always warned him that shit happens when you get drunk. Still, Arthur really hadn’t expected to get some random dude pregnant at a frat party. Now, Arthur and Merlin are good friends and the proud parents of five-year-old Oliver and it seems all’s well that ends well. But then there is a very drunk wedding and shit happens … again.
Blame it on the Hobgoblin by crazyparakiss
In which Arthur’s a famous footballer and the son of a billionaire, Merlin’s one for hysterics and the son of nameless farmers, and they both make a life altering mistake by hooking ups while under the influence.
Nineteen Years and Counting by herbeautifullie
Merlin has a lot of reasons to dislike Prince Arthur, even if his mum doesn’t understand half of them. He’s not going to become Arthur’s friend, go to Arthur’s birthday gatherings or stop by Clarence House on one of his rare days off to ‘say hello’ because Arthur is weird, okay? He’s weird and Merlin wants nothing to do with him or his strange tendencies.
The Kid Is Not My Son KMM
Arthur unknowingly meets his son and learns to care for him. He finds out that Merlin is the kid’s mother and this time, Arthur realizes that he will do anything to keep Merlin and Kit in his life even if it means that he adopts and raises Kit as his own.
Fear and Wanting by barbitone
Arthur’s not sure if what he wants is wrong or if it’s the wanting itself that’s wrong.
As always, Merlin complicates everything.
In Destiny’s Hands by beren
Arthur seems nervous about something and it’s beginning to worry Merlin.
The Gravest of Miracles by RurouniHime
If there was one thing Arthur Pendragon was never without, it was a mood.
Trouble of the magical kind by Tossukka
In the court of King Uther Pendragon, there were two rules concerning relationships and marriages in the royal family. The first one was that it had to happen for love. The second was to never, ever fall in love with a sorcerer or a servant.
It was really quite unfortunate that the Crown Prince of all people had to go and fall for his magical manservant.
Between the Dusk and the Dawn by ZairaA
When Arthur is sixteen his father deems him ready to lead the knights on his first mission, which is to take care of a druid camp that has sprung up within the borders of Camelot. In the midst of chaos and bloodshed that leaves Arthur guilt-ridden, he manages to save one boy whom he swears to protect at any cost.
Over the years Merlin becomes so much more than Arthur’s redemption, but is Arthur ready to accept their shared destiny, his own feelings for the younger boy and the chance for love Merlin is offering him?
The Coming of Spring by ingberry
Kings, even new ones, were not supposed to long for their menservants. They shouldn’t let their eyes linger on their wrists, the plump of their lips, or the shape of their thighs. Arthur knew this, but he still wanted. There was nothing about Merlin he didn’t want.
Flood or Those Times in the Potato Storeroom by enjambament
After Arthur accosts Merlin in the potato storage room, it’s easier for a few days. They can’t help catching each other’s eyes across the hall and pausing, trapped by their own want, but Merlin is more conscious of how close he stands when he serves Arthur at dinner, and Arthur at least stops telling him to go groom his horse like what he actually means to say is please, if you would take off all your clothes.
We have three great lists of omegaverse (love the omegaverse too) and I wholeheartedly suggest The Heat of the Wolf by SPowell because it’s looong and very well written.
Plus, a couple of recent fics lacking from those lists:
The Unexpected by maryh
Arthur unexpectedly goes into heat. Merlin gets in the way.
Not what they taught us in school by elirwen
Arthur receives a phonecall in the middle of the night. Merlin says he just wants to talk, but there’s more he needs, even when he’s reluctant to tell.
Suffering from fate by Aranei [WIP]
An Omega Verse story: Prince Arthur and Lord Merlin grow up together. Their whole lives seemed to be mapped out for them. Can they learn to live with the way things are?
The Ember Series by ingberry [WIP]
All Arthur had planned for the day was beating Mercia senseless on the football pitch. He hadn’t counted on his heat coming a week early.
My Biology does not Define Me (but it’s fun): A Tragicomedy in Three Parts by kathkin [WIP]
Everyone expected Prince Arthur to be an Alpha, but he turned out to be just a Beta. Everyone thinks Merlin is a Beta, but he’s secretly an Omega - and a very unconventional one.
As for the slow burn, there’s this list that might interest you ;)
The Sex Shop Around The Corner by hermette
Nothing says I love you like a ball gag.
Everything You Want Is Wrong by i-know-its-0ver
Merlin and Gwaine are dating. Arthur definitely isn’t jealous.
Oh Baby I’m A Fool For You by nu_breed
Arthur doesn’t like the new guy at all. It has nothing to do with Merlin, of course, who he isn’t even remotely interested in. And if he was? Well, he’d never admit it. Not even with the aid of a lot of alcohol, karaoke and a meddling sister.
Confidence (WIP) by Anon
(canon-era, no summary)
Caged Little Bird by Deminos
Arthur Pendragon has almost everything he could ever want; he’s smart, handsome, charismatic, and rich. However, he longs for the same kind of perfect, loving relationship his own parents had enjoyed…the kind of relationship that generations of the Pendragon family have enjoyed. But in all his searching, Arthur has never found the right person to love, the other half of his soul…until now.
Chatroom by neuroticnick
After breaking up with his girlfriend of two years, Arthur’s friend suggests he visit a chatroom to meet someone new. Arthur doesn’t expect any results, and only follows through with the idea for lack of anything better to do. But then he starts talking to the witty, intelligent, and absolutely hilarious user known only as MightBeMagic, and it seems like his friend’s advice wasn’t so bad after all.
Fan Favorite KMM
Arthur knew it wasn’t really a good idea to read the comments people made about him online.
Social Networking Encourages Stalkerish Tendencies by SecretForKeeps
In which Merlin is an adorable nerd and Arthur becomes a bit of an internet stalker. And everyone is on tumblr.
Skinny Love by jxnna
Arthur runs your classic comedy Tumblr blog, Emrys runs a posh hipster Tumblr blog, Merlin works in the cafe down the road, and Arthur ends up in the middle of a lot of things.
Something more than desperation by Anon
Arthur’s adventures through (a) internet dating and (b) love.
The Meat Feast by cornmouse
Merlin is a BNF fanartist for The Roman, a camp HBO gladiator show. He accidentally becomes involved with The Roman’s lead actor, Arthur Pendragon, over Skype without realizing it. Many pornographic shenanigans and misunderstandings ensue.
Pairing Pendragon/Merlin by Anon
Arthur is a BNF and Merlin is his prized beta
They Meet On Chatroulette by superfletch
Hesitation by sadtomato
"It was only three seconds of hesitation, but it told Arthur everything." Merlin’s been lying about his age to Arthur, who he’s been flirting with online. What happens when they meet in RL? Will Arthur be charmed despite the lie, or will he…
/love by shesakicker
World of Warcraft. Arthur and Merlin meet in-game.
Eleven months. Three days. Fourteen hours. Twenty-Seven minutes. Thirty-Two seconds.
One Wedding and One Misgiving by Reyn
"I wanna see an AU where Merlin is the prince of Dragonlords (lol yeah fantasy) and he gets an arranged marriage to Arthur, Prince of Camelot."
Knight (Prat) In Shining Armour by Deminos
Merlin Emrys is the Prince of Albion and one of the strongest Warlocks in his time. Arthur Pendragon is his ever-suffering knight… and lover. Smut with fluff. Oneshot.
The Warmth of Winter by eldee
Dragonlord Prince Emrys of the Druids is assigned the task of negotiating with King Arthur Pendragon of England in hopes that dragons and magic will be permitted to come back home again. (Hopefully that teenaged tryst Merlin and Arthur once had doesn’t make things awkward.)
The Hawk Prince by reona32
An evil Queen has taken over the Kingdom of Avalon and imprisoned Prince Merlin. Prince Arthur of Camelot happens across the manor where he is trapped and vows to free him and defeat the evil Queen before she destroys them all.
Princes, Priestesses, Lords and Ladies by dentedsky
The lady Morgause pointed at Arthur. “Arthur Pendragon, a great destiny awaits you. The battle for your soul – “ and here her finger went from Arthur in the crowd, to Merlin in front of her – “is about to begin.”
The king of dragonlords has come to Camelot to sign the peace treaty. There’s a royal banquet, a royal duel, a royal betrothal and in Prince Merlin’s honest opinion, Prince Arthur is a royal pain. All goes wrong when Prince Arthur accidently proposes to Prince Merlin and, due to an ancient law, the betrothal becomes binding.
Royal Merlin verse by Utsaah [WIP]
Merlin hates everything regal because his mum does.But when Prince Arthur is going to the same uni as him, he changes those thoughts quickly and even develops feelings for him. He begins to wonder why his mum holds such a grudge against royalty. What he doesn’t know is that his mum had a history with the Mercian King and he certainly doesn’t know that he’s the son of that same King
The Light of a Thousand Suns by tracy7307
One hot day, Merlin’s magic is revealed to Arthur.
Indian Summer by rufflefeather
‘It’s okay,’ he whispers. ‘I think about you too.’
Knights Should Never Play With Dragons by thecheekydragon
Merlin hated Arthur Pendragon. He really, really did. Now he was going to have to spend three weeks as a camp leader at a summer youth camp with him?
Let Go and Watch the Sunlight Bend by cherrybina
It’s the hottest summer in Camelot’s history. Arthur is confused about what he likes, Merlin tries to help him figure it out, but neither one of them has a clue what they really want.
Let the immeasurable come by i_claudia
If anyone had asked Merlin in January if he would consider spending his summer in the woods two hours beyond the middle of nowhere, he probably would have laughed himself sick. Yet here he is, the newest counselor on staff at Camp Albion, his life signed away for eight weeks of mosquito bites and screaming children.
Pavlov Penis by derryere
In which Merlin is hot for Arthur’s bed, Arthur’s hot for the laundry, and there’s this big fucking heatwave all over the place.
In This Summer Heat, Anything Could Happen by TeaGirrl
A heatwave reaches Camelot and the boys decide that the best way to cool off is a trip to the lake.
And They Call It Summer Love by nomical
On his ninth birthday, Merlin meets Arthur and thinks he has the coolest job in the world; working at the food booth at the Camelot theme park. As the years go by and Merlin continues to visit the park, he goes from wanting Arthur’s job to wanting Arthur.
As Summer Comes; As Summer Goes by beccadearie
Thrown together for the summer on the seashore, Arthur and Merlin are fast friends, but soon discover that there’s always more than meets the eye, about the island, themselves, and each other. But time flies when you’re having fun and the weather is changing. Autumn is coming.
Amid the Pines That Stood by Emjayelle
On their day off from working at Camelot Camping, Merlin and Arthur escape to the other side of the lake for some much needed alone time.
Pieces of Us by dentedsky
Morgana is pregnant and doesn’t know who the father is, Gwen sleeps around with all the wrong men, Merlin meets Arthur and thinks he’s a tool, Arthur is getting married to the wrong person (who knew!) and it is possible Arthur is, actually, a complete tool after all. Or: Wherein Morgana Hires Merlin to Pretend to be Her Boyfriend So Arthur Doesn’t Find Out She’s a Big, Big Slutty Person.
Something New, Something Blue by iamee
All that Arthur wanted for Lance and Gwen’s wedding was to hire a hot escort girl so he wouldn’t show up like a lonely loser. Not to make anyone jealous or anything. What he gets instead is not what he bargained for at all… but with very nice eyes and a disarming attitude.
No Matter How Far Away You Roam by lady_ragnell
In which Merlin gets conned into spending Christmas with Arthur’s family and pretending to be his husband, because somehow this is his life.
All for the Pitch by Waanderlust
As if Merlin needed to be even more nervous for this pitch, as if this wasn’t the biggest account Albion Agency had seen this year, he now had to deal with pretending that Arthur was not only his boss but also his boyfriend. Another bloody fantastic day in his life as an art director.
An Exchange of Favours by SPowell
When Merlin gets a stranger out of a jam, he asks him to pretend to be his boyfriend for the night in order to make his ex jealous.
Here is a previous, similar ask Anon ;)
This Is Why (the Dictionary Invented the Word No) by morcalivan
In order to win back the affections of an ex, Arthur has gotten himself caught up in a bet to transform the socially awkward into the socially acceptable. Features evil!Sophia, clueless!Merlin, hippy!Hunith and bit-of-a-tart!Will (in short: the highschool!AU that steals the plot from the She’s All That movie)
Post-it Note Romance by fuzzytomato
Merlin has never had a secret admirer before so he’s fairly certain this one has the wrong guy.
What would I do without your smart mouth? by ariadne_odair
Merlin’s a geek, Arthur’s a jock, they’re the high school sweet hearts, and Will’s sick of PDA.
Out Of Words by silver_etoile
After Merlin came out the year before, he has really tried to keep his head down, but when jock Arthur Pendragon demands his help for upcoming A-levels, he finds himself in a new situation that Merlin isn’t entirely sure is without strings. Between suspicion for Arthur’s motives and Gwaine’s assurance that Merlin will be shagged at some point in his life, he just wants to survive his last year of high school.
The Shop Around the Corner by rotrude
Arthur works at Gaius’ Shop Around the Corner, a quaint gift-shop that fights to stay traditional. One day a new employee is hired. The only problem is that Arthur can barely stand him and the feeling seems to be mutual. Meanwhile Arthur, egged on by Gwen, has started corresponding with an anonymous pen pal.
Destiny by allthingsmagical
Merlin and Arthur are forced to become pen pals at the age of 13. Feelings start to get deeper as the years go on. Even though they’ve never met, they find themselves falling in love. They feel thankful that destiny has a way of making things happen. AU.
Yours by alcetis
The boys have been writing to each other ever since their respective classes participated in a pen pal project when they were in primary school. Perhaps, now all grown up, they finally get the chance to meet?
Dearest PenPal by Totally-Out-Of-It
A series of letters sent between two people who have never met before. A genius scholar and a rich boy with a hidden talent. Will Arthur and Merlin ever get past pretenses? Dear New Penpal, I think this is the start of a beautiful friendship.
Dear Arthur by snowblood7
Arthur, Merlin and Morgana are childhood friends. While Arthur has always been attracted to Morgana, he is completely unaware of Merlin’s feelings for him. Arthur’s father Uther decides to move to New York with his family to take up a new job, so Arthur has to go away from his friends. He makes Morgana promise to write to him via e-mail. But Morgana soon becomes occupied with other things, so it’s the loyal Merlin who writes to Arthur; but he always signs with Morgana’s name to help Morgana keep her promise. Arthur and Merlin have many things in common, and their e-mails bring them very close to each other. 10 years later, Arthur returns to London for a short vacation. By now, he’s in love with “Morgana” (aka Merlin) […]
The Minor Fall, The Major Lift by dante_s_hell
Arthur now has a family, but then there’s an accident that threatens to destroy it. It’s not easy to cope when the one you love is in hospital and completely unresponsive.
My sun, my stars by helloearthlings
“The doctors…the nurse…they say there’s still almost no chance of you ever waking up again.”
Should My Sword Fall From My Hand by Nympha Alba
When King Arthur is hit by a vicious curse, the only one who can save him is Merlin - at the cost of revealing his magic. In London in 2012, Merlin - who has repressed his magic all his life - is called in to help when his workmate Arthur is in a coma. The two worlds are not as separate as they seem, and one lifetime might not be enough for Arthur and Merlin to find just how closely entwined their destinies were meant to be.
If only this were a fairy tale by Mish-lissa (WIP)
Merlin is a long term care nurse he deals with coma patients , and although he cares for all his patients he has one favorite, whom he is pretty sure is a complete prat, what happens when the prat wakes up…
Also, here's a great list of injured Arthur and/or Merlin with variants on the theme ;)