No orgasm

Okay, so my boyfriend and I have been together for a little over a month and have frequent sex. However I can make him cum multiple times but he has only got me off a few times out of the multiple sex sessions 😭 it's really got him down.(I had a serious past with fwb's) so he's feeling like everybody else could get me off but he can't get his gf off :(( so please any help you guys have would be greatly appreciated. Our sex is freaking amazing by the way, I get to the point I'm about to have my big O then I can't..