I have a boyfriend and we have sex a lot but I hardly cum but he makes me make noises and I enjoy it whys that ?
You enjoy making the noises, eh? That's love. You're making those noises because you know it pleases him, and when you're in love, pleasing him pleases you. Seems a little one-sided, maybe, but I assure you it's the same for him. He'll do things just so you can be happy even if he isn't obviously getting anything out of it.
Moaning is natural when it comes to sex, it would be weird to have silent sex, wouldn't it?