Fics where Bucky doesn't understand/realise that Captain America + Steve Rogers = same person

[fatal-scribbles.livejournal.com]

I've already read 'Simple' by Osidiano (so good, please go read it). I think I've come across scenario this in other fics but I don't remember which ones. The angstier the better! Especially if Bucky sees 'Steve Rogers' as friend and Cap as foe and refuses to reconsile the two. Happy endings are appreciated!

Please no fics that pair Steve with someone who is not Bucky or vice versa. Mentions of canon other love interests is ok though. Gen fics are also fine :) Top!Bucky/Bottom!Steve is preferable to me if the fic contains sex.