I've been dating my boyfriend for 5 months and we have sex on a regular basis. I'm very, very loud in bed but my boyfriend doesn't say anything. Like, EVER. He never even moans or groans or anything. At first I thought it was because I wasn't good enough but he's assured me plenty of times that I'm the best he's ever been with and that he loves the sex. This wouldn't be a problem but, like most girls, I find it extremely hot when the guy is responsive... Is there anything I can do?