Whatever you do, don't go to the symphony with this chick.... stand her up or cancel, eithey way.. but don't go... if I break up with my girlfriend and find out that one of my close friends is going to the symphony with her like next week or some sh*t, lol.. let's just say he'd be in trouble, and there's a good chance that I go find him and actually beat his ass..
Are you OBLIDGED to go ???????? I mean, seriously, what is your thinking on this one?? You couldn't just say that you're busy, like I'm sure tens of girls have told you in the past when they didn't wanna hang out?? That's polite enough.. "oh, I already have plans, sorry"... you do this once or twice and she should take the hint... you going there, even after all that texting, makes it seem like you have some sort of secret agenda, that maybe somehow you do end up secretly hittin it.. That's actually what I sort of think, because I can't figure out why you would go if you DON'T wanna hit it?? lol.. seriously, you dont' need a lady friend and especially not one who your buddy just broke up with.. that's a b*tch move man.. just tell her that you forgot you had plans (or just stand her up)..
But hey, your life.. good luck whatever you do