HELP ex girlfriend is confusing me?

Wait til she breaks up with him and listen to her feelings and if she feels upset then don't make your move just let her know that you're there for her whenever she needs you and if you feel that she is ready to get back with you , then tell her that you would want to try again because you two broke up for a misunderstanding.. Best wishes to the both of u. Plz answer mine.. :) thanks