Dry sex

Briana • I`m Brie! Trying to become more aware of how my body works and to become familiar with my cycle.
Okay so usually, when my boyfriend and I are beginning to get in the moment, chances are I'm already waterfall wet. He turns me on super easily so it's never been a problem, and it continues on throughout sex. Recently, though, I'll get wet, not as much as usually, and we'll start to have sex, then I'll notice that I'm beginning to get super dry, mostly from the burning sensation I get down there from my clit and whatnot rubbing against him, and my lips will start to bum every time he slides in an out. It's extremely painful after a while and makes great sex feel terrible. I'm not really sure what the problem is, but I'd love to figure it out..