How do I convince my boyfriend into accepting my kinks, consensually*

I'm 21, I have weird kinks....
[cuckquean] [submissive] [freeuse] [sadist] [FMF] [CNC] [Misogyny] [BDSM] [hardcore] [slave]

But I'm afraid he would consider this weird and leave me. And I dont want that to happen. :/

And no, I'm not trying to get rid of these fantasies or do i need any help. I have accepted myself for who I am.