You are in the thick of withdrawing from a toxic relationship. It's no surprise to me that you are suffering immensely.
First things first, why are you friends with your W on FB? She's not your friend, she's your abuser.
Second, I would abstain from all social media for the next few months. It was one of the best things I did in my situation and helped me keep my focus on me.
Third, get your ass in gym and workout like you are training for a prize fight. I promise it will help you.
