Spoilery... info from books and an interview
Originally Posted by rfisher
In the books we learn that Eric has been with men - Eric was 'made' by a man who was interested in men, so Eric had to have sex with him (as a 'maker' can't be disobeyed) and he says he learned to like even that. So if they go by the books, Eric is somewhat bisexual, though his preference is women.
In an spoilers before the season started it was stated that Eric was going to have a homoerotic encounter with a (nameless) character. I've also read in an interview that Lafayette will be drinking Eric's blood next week, and that apparently it comes across rather sexual on screen (though Nelsan Ellis - Lafayette says that when he was filming he was just thinking that he hated Eric). So we'll see. Also, Eric has been a bit flirty with Lafayette so far.
I think they're going to end up building up for an Eric/Sookie pairing eventually, if they go by the books, so a Lafayette encounter could potentially spoil that. However, they might just do it for the heck of it.
In any case, I'll take my naked/semi-naked/sexual Eric any way I can get him. And if it happens to be in a way that brings the sassiness back to Lafayette, then I won't complain about that either.