I'm 18 and 3 months ago I started dating a girl with massive value at the school. I have a lot of female friends, some that would probably suck my dick right now with minimal gaming.
These female friends of mine have shown jealousy towards my girlfriend ever since we dated. One of them even went as far as to say "dude, I care about you and I know that this girl is not good for you. she has slept with countless guys at school!"
Fact is she's only dated 2. She dated the first one when she was in 8th grade so I doubt anything happened and she dated the other one last year, judging by how I see him he probably never got further than a kiss! Yes she wasn't a virgin when I found her, she lost it in January with a guy that no-one at school even knows about. It was painful and she vowed to abstain from sex for a long time... LMAo! Until I came through.
Jealousy gives birth to lies and false realities and that is what you have been fed by your so-called "friend"
On the sex part, I honestly have no idea what's up with your situation...
Has she refused to go further than a fondle or do you not have the comfortability and confidence to go past that? Have you built sexual tension with her? What's up dude, why haven't you hit that already?
P.S. I don't officially call a girl "My Girlfriend" until I've slept with her. There is just a sense of officiality that I get from laying a girl that I want to be my girlfriend. Maybe that's just me.