Slowly become sexually incompatible

Me and my boyfriend have been in and off again for a while. Things are going good we decided to wait on sex because we didn’t want things to get messy as we r trying to fix our relationship. Well last night I broke down and practically begged for sex I was just so in the mood for some reason. 3 rounds of sex last night and one when he got home from work and I’m now remembering why things didn’t work out sexually between us... he likes to call himself a “Classic guy” basic positions basic boring sex when I on the other hand am very very open about how kinky I am and how I have a lot of strange and “ creepy” turn ons. He keeps saying he’s willing to explore and try more but every time it comes up he backs away from it. He keeps begging me for one position which I physically can not do because of my back problems. I love him to death but the lack of sexually compatibility is driving me insane.