Hey, Idk if Lo is an ex or not. I know what it feels like to be used by someone and to not be loved. I know how hopeless and worthless it can make you feel. I wish i could hug you and bake you some cookies and make you feel better. I PROMISE that one day, he wont have an affect on you. You'll hear his name and maybe even see his face and not be affected. It just takes time, hang in there love.