Girlfriends friend wants to hang out?

[pushpills]

I got a strange call a few minutes ago from my girlfriends former roomate when she lived in the dorms (before I met her). I've hung out with her maybe 4 times, along with my girlfriend and her other friends. I don't even remember giving her my number. She called me up and asked if I wanted to get together and mentioned she had gotten a fake id (she's 20). She's a nice girl, but, my girlfriends out of town, wont even be able to call for another 3 weeks, and her friend wants me to hang out with her and drink with her alone?

I said I wasn't sure if I had work to do and that I was out shopping and I'd call back in an hour or so. Would I be being a jerk if I didn't hang out with her? Or would it be scandelous to be drinking with one of my girlfriends friends I hardly know while she's away?

I guess I gotta think about it. What if she came on to me? Then I'd have to tell my girlfriend and they probably wouldn't be friends anymore, or I'd get in trouble for liqoring up one of her friends.

decisions decisions. what would you do?