I'm 19 and have been with my girlfriend for almost three years, except a couple months break last year when I broke up with her for fear of commitment. She's a year younger than me, and prior to our relationship, she had done some oral sex and handjobs with two guys. I've never been sexually active with anyone other than her. We were both each other's first sexual intercourse partner. During our break apart last year, she had sex with another guy. Long story short, I love my girlfriend tons. I recently got a new job and we moved across the country together and now have an apartment. We're very happy together and have what I would consider a very healthy relationship.

In the back of my head, though, I am always jealous of her sexual history. She's been with 3 other guys, and I've never even seen another girl naked in person. I've seen figures that men typically have around 8 sexual partners in their lifetimes. I feel horrible for thinking this, but it really bothers me that if I stay with my girlfriend (which I want to -- I really feel that I could be with her forever), I'll never have sex with another girl, because I have my morals, and I could never cheat on anyone. I'm not even sure what I'm asking, but do you have any advice for guys (or girls) in my situation?