My boyfriend doesn't enjoy sex as much as I do?

I'm a pretty horny girl. I like to have a lot of sex and I'm really into experimenting and my boyfriend is very traditional and gets annoyed at me constantly wanting sex. I feel bad masturbating because I know it bothers him but I'm horny like what does he want me to do? I should also add we're both 20 years old if that makes a difference. Advice, would be greatly appreciated! I mean I don't usually just overtly say hey babe I want to have sex. I tease him and whisper dirty things to him, nibble on his ear. I do all things that I've found really get men going usually but he's just always like, come on babe not right now. It drives me mad! I put so much effort in trying to make him want me and he just pushes me away.