text: i got a girls number at the bar last night how long should i wait before i call her.? you always here 3 days.  when do girls really expect a guy whom they gave their number to, to call them. if you got it last night (thursday), call her late morning saturday.  3 days is too long.  calling right away says "desperate."  be casual, but respectful.  girls who say "call right away" don't really mean that - when they get those calls they think there's something wrong with you - you're either desperate or aren't confident.