I'm so sorry to hear that. Maybe you can make an appointment with a therapist. This is not because anything is wrong with you, but because you need to get through the grieving process. Don't look at his Facebook anymore, because he is simply not worthy of your time and attention. If you are Online, use that time to look up articles on how to avoid bad guys like that in the future and what qualities to look for in a guy. You can positively start preparing for your future happiness this way : ). Also, if you feel comfortable, you can set "not looking at his facebook" as a daily goal and keep track of it in your journal to create a habit of not looking. After some time of not looking, I think you will feel significantly better.

I know we make ourselves vulnerable to judgment when we post on here. So I really appreciate your honesty. I wish you the happiness you truly deserve!