getting wet/orgasms???

Okay so my boyfriend and I have been together for a year and few months and I love him to death and I'm hoping to get engaged soon, but when we have sex, I can never get wet. And I don't get it, he eats me out and touches me and takes it slow, but it never happens. We end up using lube every time. And sex feels good but I don't ever reach a legit orgasm. Is something wrong? Help!