Ass play

Hey ladies! So my husband has never liked me being anywhere near his hole, but after reading some of the things on here I kind of want to try licking or fingering him. A guy I was with before really liked it, and it turned me off. So I'm afraid to do it with my husband, because I dont want him to like it too much. 8 want him to lick me and finger me, and he says he'll do it to me if I do it to him, but he confessed his gay cousin tried when he was younger and that's why his hole is off limits, but I want him to do it to me, and I want to do it to him, but I'm afraid he will like it too much and idk what should I do?