is my boyfriend gay or bi-curious or neither?

[Amanda]

My boyfriend and I have dated for a couple years now. We've been on and off for a while now because of some things that happened a while back. Well lately when we have sex he has asked me to finger his butt and eat it out? I mean I don't really mind he's not dirty or anything but it worries me, I didn't think guys wanted things in there butt unless they were gay? Does anyone else do this or should I be worried?! please I want for real answers. thanks