It''ll take some time. How long was the relationship? She's not healthy if she's jumping into another relationship that quickly, and you're probably better off as a result. Let the loss stuff move forward, feel those uncomfortable feelings, realize that there will be a time of slow healing that although a pain, it's will be ruminating that helps heal, give you a chance to do things you want to do, find your self again, and hopefully learn from the previous situation, before jumping into another relationship. One day at a time, and then you'll be in a spot of balance between finding someone better, and not letting the next lady treat you inappropriately either.