Avengers Preferences

Jealousy

Tony Stark/Iron Man: When Tony gets jealous, he has no qualms about showing it. He knows flirting when he sees it - he's done it often enough himself - and he'll put an end to it in his own decisive way. He'll come up beside you and, much to your annoyed amusement, will slip a hand into your back pocket as he puts his arm around you. It's his own way of showing people that he's the only one that gets to touch you for anything beyond a handshake or friendly hug. And when the gold diggers start hitting on him, you keep it nice and simple as well - usually a whisper in his ear that ends up with the two of you slipping away somewhere quieter.

Clint Barton/Hawkeye: It always surprises you how a guy as chill as Clint can get as jealous as he does. He's not overprotective, but the second that any guy starts showing just a little too much attention he'll be at your side, silently glaring at the offender through his shades. And when the ladies get too interested in him, you'll pull the same trick - playfully pluck the shades off his head before giving the culprit your best imitation of the boyfriend's tough guy stare.

James Buchanan "Bucky" Barnes/The Winter Soldier: Bucky has no qualms about letting others know that you're his girlfriend and that the two of you are exclusive, thank you very much. But his history leaves him wary of physical violence, because he could easily hurt someone without realizing it. So his irritation is usually shown by a possessive arm around your waist and a tightening of his jaw that you find ridiculously attractive. And though he's still breaking out of the homeless look, he's a handsome man that garners plenty of female attention. The fact that he's a former ladies' man would worry you if you hadn't already seen him turn down several gorgeous women in your favor, so you don't worry much. You know that he's yours.

Loki: Even though you've become a proper resident of Asgard, you still feel a sense of duty to your old home. Therefore you always make an effort to be polite and engaging, which is something that Loki often takes too personally. He'll become sullen and quiet whenever he feels threatened by another man, and you'll have to show him that you have eyes only for him.
Not many other women find Loki's dark and slender appearance attractive, but the ones that do make your blood boil. You would never admit it, but many of those mysterious rashes can be induced by spells.

Steve Rogers/Captain America: Everyone at work knows that you're Steve's girl and would never make a move, but every so often when you're out and about some creep will start catcalling you. Having Steve with you is like a heckler repellant, however - one look at your man's biceps and pecs sends the douches looking for easier prey. So jealousy is never that much of an issue on Steve's side, though for you it's a different story. You know that Steve is a gentleman and would never cheat on you with any of his groupies. But the fact that he is a gentleman means that he won't send them packing, and you usually take that upon yourself. It's incredibly satisfying when it happens on your turf and you can "accidentally" hose them down while watering the yard.

Bruce Banner/The Incredible Hulk: Jealousy is another red light emotion for Bruce - an almost guaranteed way for the Hulk to make an appearance. So he always keeps his cool as well as he can, but when any guy gets too close he'll start to turn green around the gills and you'll have to excuse yourself before the flirt gets torn limb from limb.
Due to his "condition", Bruce is already incredibly cautious in his relationship with you. Any flirting from a third party turns him into a stuttering mess and he can't escape quickly enough.

Thor: Despite the fact that you are quite a capable woman - or goddess - when Thor hears of someone trying to take what's his, there's no stopping him. There have only been a few unfortunate souls to try to make a move on the god of thunder's "lady friend", and most of them have ended up knocked into next week. And while you don't guard Thor quite so jealously, you leave no doubt on the matter of who has sole kissing privileges.

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Bah, that took forever and I'm not entirely happy with it - it was a hard prompt for little ol' peaceful me - but it's done and an update and now I can move to the next one. :)