Boyfriend wants anal ?

While we were having a little 'fun', my boyfriend decided to spice things up a bit. I was sitting on the couch, and he turned and put his legs on my sides and his butt up in the air. I'm not sure if he wanted me to lick him or what.. When I was touching him there, he seemed to really like it. PLEASE HELP. We have never talked about doing this before. We normally just have orak sex and intercourse. He was also super embarrased about it all afterwards. I have no interest in anal, I'm not sure what to do. He claims he was trying to be more 'intamite'. What do I do??