I feel bad for getting upset last night (even though she'll never know I was).
I was just excited and then... Bam.
Oh well.
You're thinking too much into this. You don't know what happened. Maybe she fell asleep early. Wait to see what happened first. Besides all of that, she barely knows you. Even though it would have been nice to get a text, she doesn't owe you anything. She said she might not go, so that was your warning. Don't write her off so capriciously.
Am I the only one that feels like maybe even hoping for the text is too much? What, really, did she owe you, Jay? I don't say this to be mean, but to highlight that the expectations are YOURS not hers. It's not easy, granted, but just take each moment for what it is: a moment. Live in that moment. If she shows, yay, if she doesn't, talk to the next girl that stands next to you.
Don't put all this weight and baggage on each and every encounter. Even saying "thank god my friend's GF was there" is too much expectation. So what if she wasn't there? Listen to a good band, and like I said, say something stupid to whatever girl is standing next to you (even if she has a boyfriend). Just talk to people. Doesn't matter how dumb or stupid it is, because you'll either never see them again, or if you do see them again it's because they WANT to see you (in which case, what you said isn't that stupid anymore).
Do you know how many times I started talking to a girl, and ended up with the friend's phone number? Either because they were seeing someone or they left early or they were obnoxious and I ended up saying something stupid to them? You got to let a moment develop instead of having everything planned out to a T.
"Man plans, God laughs".
EDIT: I just read Prog Snob's note, so, no, it isn't just me.