Hi, I can understand break ups can be hard to live with but you should remember that if you couldn't reconcile on your differences earlier then it wouldn't have worked later on as well. Why are you looking at her pictures at all? You need to stop stalking her and work on moving on with your life by working on your priorities or activities which make you happy as well as productive. Since you're feeling lonely, you should bank on your support system like friends and family but if you're not comfortable sharing your thoughts with them then go to a counselor for a few sessions.