I'd love to find two writers for a threesome line between Steve Rogers (Captain America)/Tony Stark (Iron Man)/Bucky Barnes (Winter Soldier). I think there's a lot to work with there with Steve being the obvious link between them; the love of his past could be Bucky, colliding with the love of his future with Tony, and when it turns out his past isn't dead and buried things can get complicated. But they, somehow, find a way to make it work.
I'm definitely pretty reliant on comicverse (especially since Bucky gets all of ten minutes of screentime in the Cap movie, so there's not much there) but I think that there can be a good balance of movieverse and comicverse! Plenty of drama, action, smut, angst, with those moments of love strewn in between.
I'd love to play Bucky but could easily write Steve as well. Really I'd just love to find a way to make this line work, so whatever we can work out!
Also, goes without saying that I'd be up to write any combination of the three as well; Steve/Tony, Steve/Bucky, even Tony/Bucky if it's done right, so if you're looking for any of those that's okay too!