Hello! Can you recommend some A/B/O long fics? It doesn’t matter whether the Alpha is Tony or Steve. Thank you!

Long A/B/O fics!  Yes, some of my favorites to read. Here are some that are all more than 20K in length.

LONG OR SHORT, ALL NICE COMMENTS ARE AWESOME!

Alpha Steve

Stetsons and Schoolteachers by @not-close-to-straight: Alpha Sheriff Steve Rogers doesn’t know what to think of the new school teacher in his small town. Omega
Tony Carbonell is a quick witted, sharp tongued, sarcastic Omega with a
butt that won’t quit– and a temper that won’t quit either. Every
attempt the Sheriff makes to get close is met with rolled eyes and
snarkiness, but finally Tony gives in a little bit and the pair spends a
few moments together that leaves the Alpha panting, desperate for more.
But there’s a layer of secrets beneath the Omega’s attitude, and the more Steve pushes, the more Tony pulls away. When
Tony’s past comes back in a terrifying way, Steve learns more about the
Omega than he ever thought he would, secrets that make him rage,
stories that break his heart, and when Tony is kidnapped, the Sheriff
saddles up to bring his Omega home. But Tony doesn’t consider Wildrock home, and he certainly doesn’t consider Steve his Alpha. How can the Stetson wearing Sheriff convince the stubborn Schoolteacher that they are meant to be?

While We Pretend to Sleep by Typo66:
Tony pretends to be an alpha. Then he forgets he had been pretending.
One thing he remembers is Steve. Steve tries to help out in his old
fashioned, ethically strict way. Tony likes making big gestures. He has
never been subtle.

Fealty by @robintcj, Lasenby_Heathcote:
Steve Rogers is Lord of America, and was gifted his corner of the
kingdom of Starkland after amazing acts of heroism in the war against
Hydra. A long, brutal winter forces Steve to go to King Howard for aid,
and Howard agrees – under the condition that Steve bond with his Omega
son, Tony. Steve agrees, of course, for the good of his people. Prince
Tony is a trained Omega Consort – an Omega of status sent to a
prestigious academy to become the perfect Consort Mate to high-status
Alphas throughout the kingdom. At this academy they learn diplomacy,
negotiation, proper manners, and, of course, the various ways to
pleasure their Alphas.

You Know Who I Am by BuckyAboveEverything: Young Tony Stark is forced to marry Captain America. It is either the best or worst thing to happen to him.Spoiler: It’s for the best, mostly. 🙂

The Taming of the Shrewd by @jellybeanforest-a-go-go: Waking up after 46 years on ice, alpha Steve Rogers has lost
everything. His family is dead, and his fiancé had long married his best
friend after his presumed death. The only thing he has left to live for
is his dedication to his country, but is that enough to sustain a man?
Nick Fury seems to think it unlikely, so he conspires with an old friend
to arrange a bond between Captain America and the man’s omega son,
Antonio “Tony” Stark.They tell Steve that Tony is a wonderful
young man, NYC’s most eligible omega, even. He’s brilliant with a
promising future and handsome, made all the more attractive by his
dowry: Stark Industries, a multi-billion dollar conglomerate. Steve
wonders how such an omega is still single, but he chalks it up to Howard
being a particularly vigilant father.And then he meets Tony for the very first time on the day of their bonding ceremony when the man shows up completely plastered. With a date.Steve
should back out, but one look at Tony and he knows doing so will be
playing into his hand. Besides, since when has Captain America ever
turned down a challenge?

Adopt by greenteeth:
Steve’s life is the same as usual. He goes to work, fights super
villains, banters with other Avengers and goes home to an empty
apartment. Until the son of an old friend shows up asking for help, well
sex first, then help. Suddenly Steve is married, fighting super
villains, worrying what Obadiah Stane and coming home to Tony most
nights of the week.

I Whisper Your Name on Each Star I See Falling by JezebelGoldstone: The day Natasha first told Steve her idea, he never
would have dreamed that her fool notion would land him here: watching
the train roll into the station and trying to wrap his mind around the
fact that somewhere in there is the man who agreed to marry him.Steve,
an alpha farmer living outside a small town in the Rockies who doesn’t
want to admit how lonely he is, has been exchanging letters with omega
Tony for nearly a year. When at last Tony arrives in Big Eden, Steve is
confronted with the fact that he doesn’t know Tony as well as he thought
he did – and falls for him harder than a landslide anyway.

Heart in Hand by janonny @awesomelifechoices:
Steve had been thinking — that was all he was doing, thinking, not
moping, as Bucky described it — about the best way to make his feelings
clear to Tony. He wanted it to be perfect. He needed it to be the best
demonstration of sincere interest that Tony had ever received.

Bucky called it procrastinating, but Steve called it strategizing.

And this Courting Ceremony? It was perfect.

Now he just needed to figure out what to get Tony as a Courting gift. And what to wear. And what to say. And what to do.
-Or the story where Tony, an Omega, holds a much belated Courting Ceremony. Steve joins up and loses his mind a little.

Amaryllis and Peonies by Reioka:
Tony hadn’t known that Steve had never smelled an omega in heat before.
He’s not sure what he would have done differently if he had known, of
course, but it would have been nice to know, if only so could have
prepared for the events that happened after his heat that dominoed after
it.

Celestial Navigation by sabrecmc:
18 year old Omega!Tony finds himself Bonded to Captain Steve Rogers.  He isn’t happy about it until he is.

Caveman AU by sabrecmc:
This is a request from anon for a Caveman AU!  It is A/B/O with Omega Tony and Alpha Steve.

Alpha Tony

The Nature of Things (series) by @winterstar95​:
He will do anything for Tony in this room. Outside, he’s Captain America/Steve Rogers, inside he’s only omega – Tony’s omega.

Hidden by fadedlullabyes, Silver_Moon_Lit_Forest: After years of hiding his status as an Omega, Steve finally slips up when he beileves the rest of the team is out of the tower.

I’m Following the Map that Leads to You by @fiftyshadesofstony:
All alpha Tony Stark wanted to do was make amends with his coworker,
Steve Rogers, and maybe build a new friendship, starting off on the
right foot. He had no clue that lending a helping hand when the omega
needed it most would lead to a life changing consequence.

This is Not a Drill by sabrecmc:  “Can I—can I see him?  I mean meet him.  Uh…welcome him to the team?” Tony clarified, probably not very well, he knew.  “Well…there’s a bit of an issue with that,” Fury said, and Tony figured this was where Fury got to whatever it was that had really forced his hand and made him call Tony in, knowing how much the man detested having to do so.  “You see, well.  He was suspended in the ice for nearly seventy years,” Fury began. Tony nodded along, because he could do math. “I’m sure he has a lot of adjusting to do—“ Tony started. “Seventy years,” Fury repeated, cutting Tony off and leaning back in his chair and making it rock slightly.  “Of no suppressants.”

This is Not a Drill: Honeymoon Edition by sabrecmc:
Steve’s going into Heat, so they head for the island.  Tony handles this just as well as you would expect.