This is a followup to my previous post about a way to get a girl's number. So it went well, she smiles and gives you her number. The question now is did she give you a real number or did she make it up to avoid saying no to you directly? Do you call her right there? Do you ask her to repeat it to you? NO! Once she gives you the number, casually read the number back to her "to make sure you are reading it correctly". But while you are reading it back to her, change one number. I usually switch a 1 to a 7, or visa versa. This is a quick and casual way to find out if you are wasting your time/money. If she doesn't correct you, wish her a goodnight and move on. If she corrects you, then it is her number and she is actually interested in you. Hope this helps!