Tell her that you can't go due to an issue with you're family (out of state). Live in you're room for that night, don't answer the phone, and have almost ALL lights off, that way if she comes by, it'll seem like you're not home. MAKE SHURE YOU TELL YOU'RE PARENTS!!!!!!!THEY WILL SCREW UP EVERYTHING IF YOU DONT. But if I was you, I would just go. There are plenty moar chicks to go out with. Just don't seem like a man whore...