The guy I'm seeing is into some weird kinky stuff and I don't know how to deal with it

So the guy I'm with is just so great in bed and makes me so happy. He can make me have more orgasams than I can count and he's also just a really great guy that I like very much. HOWEVER, he is into a lot of things that just don't do it for me and make me uncomfortable. I really want to please him as much as he pleases me though. So first of all, he loves nothing more than anal. I have never had any desire to put anything in my butt, and I'm willing to try it for him, but I don't even like the small stuff, like licking or a finger. But aside from that, he really likes degradation. He wants to call me a slut and a whore, and other degrading stuff and because I have a lot of insecurity, I'm afraid I might just start crying or something. Under that same field he also wants to do public sexual stuff in a degrading way. I'm just not into any of this. I think the worst of all is that he wants me to go down on his unclean junk, because he thinks it's degrading. I want to please him but don't want to do any of the things he likes. Please help!