i'm 17 years old & have been having sex with my current boyfriend for about 3 months. we do it often & he comes every single time, but i haven't come at all. i hate it because when i'm by myself, i can come in like two minutes. today we had sex & afterwards i explained to him how frustrated i was because i couldn't come. maybe i just get in my head, but i seriously want to come while we're having sex. has anyone else had this problem & what were some things you tried?