met a girl through a friend/girl i used to date last night. my friend specifically asked me out to try and hook me up with her.. there wer 5 of us, my friend and her bf and 2 other girls - 1 of which i was interested in. we all went to dinner, then some lounge - talked to her a lot. we all went in the same car and they dropped us off. i was gonna ask her for number and if she'd like to get together and go out sometime after we got out of the car, but only 2 of us got out of the car, and she stayed in the car for like 50 more feet to be dropped off closer to her car, so i didnt get a chance to ask her is it weird if i add her on facebook and message her to ask her out?