Well, its too late! Advice?

i dont think you can ask out ur crush right now right now, but u can deal with ur ex, she is very messed up, and she craves attention. if you block her out, pretend like your not mad she will get madder and you win :) ignore her texts, ignore her calls, when she calls you names say "thank you" or "whatever"(not with anger thoguh) and she will just lose it