4. On the first date that you go out with her after break up, be at your best. However, it is advisable not to be overly nice and not to be the person you are not. Think of the days when she first fell in love with you. You have to have those qualities within you when she was first attracted to you. Your ex girlfriend will want you to be the same as you were in those days. Therefore, you have to be prepared with all these before going out on a date with your ex girlfriend after break up.