He's not into the same things😢

So, I have a MAJOR daddy kink and loveeee calling my boyfriend daddy but it weirds him out, in the beginning of our relationship he'd only have really slow gentle sex with me because he's always scared to hurt me lol (he's 6'4 and I'm 5'2) now I have him going super hard with me, he pulls my hair at the same time as he's choking me and slaps my ass really hard and all that and he'll say things like "you've been a bad little girl haven't you?" But not want me to call him daddy, sometimes he lets me and gets into it but if I do it without him asking it makes him a little uncomfortable I don't know what to do, and he doesn't know that I'm super into it like I've never told him that it's a big kink of mine any advice would be greatly appreciated