My boyfriend doesn't moan

Okay so I've noticed that everytime my boyfriend and I have sex, I'll be having a grand ole time and I'm a huge moaning mess. But he's just silent. I asked him about it and he can't really explain himself. I wish he talked dirty to me or something because it's a complete turn on for me. I mean, he's not shy when we sext, but when it's REAL, it's like he's a scared virgin. Anyone else?