I can't cum
Ok, so I am 18 years old. I have had sex atleast 80 times and I have never came. I don't know why. Every guy I have been does all the proper things. Inctercourse(oral/rubbing) and sex. We always switch positions. Even when i'm alone and maturbating I don't cum. Maybe it's because he lasts only 5-10 mins? Other than that I don't know why I can't cum and it is very frusterating.