<human>: Provide a brief overview of the text.

Gf and I have been together for a little over 3 years and I recognize that I'm not the most trusting guy in the world, just in general. But I really feel this has gotten under my skin in a bad way. 

Basically, her college f*ck buddy was a guy in a local band and it turns out that they've booked a fairly major gig in our city (not the originial college town.) They used to hook up and etc throughout most of her college days, but she says that she hasn't kept in touch. He was supposedly really cool, "super hot", and all of her friends just loved loved loved him. Yay for him.

I agreed to go to the concert with her tonight (because she is my gf, afterall and we love concerts), but today she says that she anticipates being invited backstage for a party and she's super excited about it. I'm not so super excited about it. In fact, I'm loathing the whole evening now.

She says that she hasn't talked to him since college and isn't even facebook friends with him. But somehow knows that he got married, divorced and now has a kid. And there was no real answer when I asked where the backstage party invite came from.

Uhg. I feel like an ass for being so uptight, but all I really want to do at this point is bail on the whole night and just go get drunk. Obviously that won't help, because then I'll just disbelieve anything that she says happened. I guess I'm just looking for advice on how to gt over this. Should I man up and go? How does one handle that?
<bot>: Gf's college f*ck buddy is in town and she wants us to go hang out with him... I'm disinclined, but not trusting enough to let her go without me.