ok, i'm 19 and i'm a virgin. i haven't had any kind of sex with a girl. i haven't even gotten intimate with a girl yet. but when i masturbate, if i'm turned on, it usually doesnt take long at all to reach orgasm. like, if i was watching a sexy porn video and masturbatng to it, it could take me like a minute to orgasm. the thing is, i can't imagine being able to hold it if i'm actually getting a blowjob or having intercourse. i can imagine myself reaching orgasm in a few seconds. is this normal for a virgin or do i have premature ejaculation? how do i get over this problem?