help!!

So when me and my fiancé have sex he was only lasting about 4 minutes without a condom now we use condoms and he lasts maybe 10. I don't know what to do I love him with all my heart and I don't know what to do I'm so deprived idk what to do we're getting married and I love him so much. I try to have sex with him a lot to see if maybe he can last longer but never does and I've never came vaginally idk what's wrong with me or what? Ugh! I'm so frustrated!!