Anal on husband?

Does anyone else’s husband/boyfriend like anal pleasure? Normally my husband would say anything going up his ass is gay until a friend told him how his gf stuck her finger in his ass and he liked it and cummed harder. After he heard that we were taking a bath and he put my finger on his butthole and was helping me push it in and out. He was rock hard and the faces he made was such a turn on. Looking for advice to keep this going to give him pleasure from it and if anyone else’s is the same way?