I've been seeing my boyfriend for 6 months, and I have a much higher sex drive than him. I often feel like I force sex out of him; often he is sexually aroused (lI can tell because his penis is hard), but he still doesn't want to have sex. I wouldn't mind having sex less often than I would find ideal if when we did have sex he put in a lot of effort. But I have to be on top EVERY time, and he has never gone down on me. I have told him several times things I would like him to do but he makes no attempt it's just the same. Any ideas why, or what I should do?