So my boyfriend and I have sex pretty frequently. He's the one always horny, I can't seem to get very aroused. When we have sex he has a hard time getting me off, he usually will eat me out afterwards to finish me. Does anyone have any tips on how to make it more enjoyable for myself?? He hasn't gotten me to cum during sex since we first started having sex, it makes him self-conscious that he can't get me off. Can anyone tell me what him or I can do to help me enjoy sex and be able to finish?

Side note: a lot of the time it hurts to have sex because he has a big dick and any position other than missionary hurts, even missionary hurts sometimes.