Loosing my virginity, friend doesn't approve

So there's this guy, I've known him 6 months and we've been talking, we aren't exclusive because we live in different (nearby) countries. He's coming over on a suprise visit and I feel ready to have sex with him. I've never felt so comfortable around him and I really have feelings for him, but I know I like him more than me.

The thing is, I'm friends with his sister who thinks hes a fuckboy and my best friend thinks he's a dick.

My best friend is completely against me doing it and she said 'it should be meaningful and whose to say he hasn't fucked anyone since he last saw you [when/where we met]'

I'll admit he has hurt me a couple of times but I've brought it on my self and made situations awkward and unnecessary so he's not a bad guy, he's really nice and has listened when I needed it.

Personally myself I do suffer with paranoia issues because of things in the past, I feel that should be mentioned.

I just idk, I felt so certain that if I brought up the idea (its been sugggested) and he said yes and we had sex but now she's said all that there's 10% of me that isn't sure