booty play

My bf and i been together since 2013 but been friends for some time. loce each other like crazy. i my self love my booty played with and love anal sex. so one day my bf ask me to lick his ass and play with his ass since i love ut so much..i have no problem with that its just becoming a chore and no longer turns me on but uts the only way he gets hard any mord no matter what i do suck him hand job dress sexy nothing unless i finger his ass and play with his ass .... i cant even get turned on by me playingbwith his ass any more cause every day every night that is all he wants me to do and gets super pissed if i do not deliver but yet he wont return favor...