My fiancé likes getting his butt hole licked

Okay me and my fiancé have a great sexual relationship and I was giving him a blow job. As I was doing it I was going down kissing his balls and started licking them and he started to lift up in the air and I ended up licking his ass and butthole. He actually liked when I did it and I also started to enjoy doing it. I even started sucking on his ass and butthole. Now every time we have sex he want his ass licked and asshole sucked.