anal penetration yourself or having someone else do it?

[Imconfused]

not to long ago I found out my BF liked to watch shemale porno. He never got into what about them he liked etc..or how much.... One night during sex I "played" with his back end. To my surprise, he didn't stop me. Anyways I wanted to know something. For some reason lately we haven't been having alot of sex and for some reason he hasn't been watching his shemale dvd either. So the other night when we were 69ing. I just went to his arse and noticed well, I wouldn't have needed any lubricant at all. So I am curious....Playing with himself back there or maybe found someone to do that for him. I mean the first time I "played back there you needed a gallon of lub and now you could do without. What's your opinion????????????????????