Don't you hate them ugly-ass-cock-blocking friends that are jealous because they can't get any dick themselves so they have to ruin it for everyone else?
Chances are she just wants to sleep around too. Don't think of a girl as serious until you hang out a couple times, give her a call and see whatsup.
Edit: or actually bring one of ur friends that doesn't get pussy all to often and hope they bond up so you don't have to worry about that whale