need time advice!

I love messing around and having sex with my boyfriend 💯 and I know exactly how to make him cum but when it comes to me he's never made me cum😕 I'm new to all of this I'm 16 and I don't wanna tell him he hasn't made me finish so I've lied about him making me cum a few times😔 at this point I don't know if maybe something's wrong with me or if he's not doing something right...