i never cum/orgasm during sex

My boyfriend puts his penis in me. Fucks me. Then when he's about to cum, he pulls out. I never, ever have orgasms. And sometimes when we're having sex it doesn't feel good and i cant wait for it to be over. These days i wonder to myself what the point in having sex if i dont even enjoy it??? But i dont want to dissapoint my boyfriend and stop having sex with him. I need tips on how to make the sex more enjoyable. At the moment its horrible