Help pleaaaaaaseee!!!!! needs opinions specially girls opinions lol?

ok long story, so this girl and i like each other (just found out) anyway what do i do now because she just got out of a relationship and her ex is a good friend of mine and we play bball together and we could have a really good season so i dont want to mess things up there and he likes another girl but yet she says he comes over and acts like nothing happend between them, and she has admitted shes still getting over him, and we did say we wanna wait to let stuff clear out but how do we know when we can start goin out or kno when we could do little things and what not? and also is she just playing me? she says shes not just saying that she likes me just to make me feel good if that has anything to do with it