I can't count on both hands how many times i've been rejected. If she said no then keep looking. I was leaving walmart a week ago and three girls pulled up beside me and started walking in. I could have started flirting, but i didn't take advantage of the moment. My point is to move on and keep an eye open for those moments. Trust me, if you get out enough you'll come across plenty of them. And when you do, don't be like me. But capitalize on it and do something. If she says no, then don't worry about it. You'll just be back to square one, waiting for another