You are getting angry because it's part of the stages of grief and it comes after denial. My guess is seeing her on the dating websites triggered that to happen. What she is doing is a classic case of hypergamy (Google) while you are sitting on the side lines. If you want to change your situation you need to display high value and not waiting in the wings for her to comeback. As long as you have hope your feelings won't change until she finds your replacement.
