She ignored me wat should i do.?

If a girl is ignoring you just because you didn't give her attention, don't you think she's a bit selfish... maybe even childish? Did she eventually find out about your past relationship? Personally, she seems immature if she's ignoring you. You weren't her boyfriend, so your lack of attention shouldn't upset her to the point that she turns her head away from you. I think you should get over this girl, because she probably has a lot of growing up to do. Just imagine how moody she would be if you two were in a relationship and you did something small to upset her.