It was an all night party on Saturday. Slept all day Sunday. I'm going to phone her on Monday. Should I ask her out on that day? Don't want to seem pushy.
right away dummy!
she s gonna think your not interested cause you were just looking for a one night stand and getting her number was just being polite!
(dude, you have to think like a woman!)
first call her and talk to her on phone.If possible arrange for meetings through friends but without letting her know about that.After 1 or 2 such meetings and calls you can ask for a date and be assured for a positive reply