not sure how to tell my bf...

I’m not sure how to tell my boyfriend how kinky I am. We do some stuff, the spanking, spitting (on me, I like that!), hair pulling and choking but I want more, I want him to tie me up nice and good and then..do what he wants..but I’m scared to, I know he’ll say yes because he loves me but I’m scared he secretly only will because I Like it not because he does.