"Hey, it's me, got your flex card in the mail today. Also friends and I are going out tomorrow so call me back or just be here tomorrow about 9pm if you are interested in going. Ok, bye."
This is one of those dates where he's going to get totally wasted then want to have a marathon night of sex (if he can maintain an erection that is). I want to go cause I like his friends but fear what he will say if I opt not to stay the night.