This girl Ashton is in my Bowling class, and I've known her a few days, i've made her laugh once, smile a lot, and even say "hello" to me, however, today, when I asked for her phone number she gave me a negative vibe, and she has a boy friend, but I don't think he's that great, I think I can be a better guy then him.

How many days should I wait before calling her?

What should I text to her?

Any help you guys could give would be awesome, I want this girl to think of me sexually, or have her like me a lot, and I want her to want to spend a lot of her time with me.