wanting anal?

Me and my bf have been sexually active for over a year now, and I always said I didn't want to do anal, and he said he has no desire to, but one night when we were drunk, he put a finger in there and I liked it... he says he doesn't remember it(idk if i should believe him or not) and he never wanted to do anal, but he remembers a lot of other things from that night, and I feel embarrassed to tell him I liked it, and that I've been wanting him to do it again, so I just brushed it off and laughed and said well apparently some part of you wants to play butt games. I wonder if he's embarrassed he did it or what. I just don't know what to do/what to say. Maybe we should get drunk again..?