How long should I know a girl before asking her for her number?
Most Helpful Girl
I personally think you should ask her out and/or ask for her number as soon as you feel comfortable. As a girl, I really don't think there's such a thing as too soon. I've had guy friends wait years before asking me out, but I've also had strangers approach me in a bar and ask me out.
Plus, the sooner you do it, the less time you spend wracking your brain over it (i.e., "is she interested?") By asking her, you'll have your answer.1