Who thinks i should forget about her?

Theres a friend i hadnt see in a while i found her on facebook and saw she was in a complicated relationship so asked her to hangout. We did and it felt like more of a date, so weeks later i asked her to be my valentine and to go out to breakfast and she accepted both. We had a quick kiss after. She told me the guy she used to be with called her to much and parents didnt like her so she broke up with him but is still going to prom with him. On facebook she is also always taking about she cant stop thinking about "him" and i dont know if she is talking about him or me or someone else. because she told me there isnt anything between them and its ok after she told me about her ex.