Ugh, Bucky. I can do some Natasha/Bucky and that's as far as I can take that, and even then its more Natasha-related.

I'm on my phone, so no links right now, but Molasses and Taffy on AO3 was a great post-s2 fic. On ff.net, Knowing the Difference by steenbeans,Follow the Macguffin by shanghailily- but not the sequel, Venus and Mars by MLP, and basically anything by silverylining2k6, but especially Sometimes You Can't Make It on Your Own, which is a currently updating wip of a an early season 1 au that has shades of The Legend of Billy Jean and it is amazing.