Female Orgasms 🙊

I am 19 years old and I've been in a relationship with the same guy for over 2 years. We have never had unprotected sex, and we have sex pretty regularly. The only thing that bothers me is that I. Never. Cum. He always finishes, but I never have. And when he's done I wish I could have more lol. He eats me out, we both play with each other before we actually have sex, we've tried different positions and talking dirty. I don't know what to do! Anyone else have this problem? Thanks xx