I would keep busy with other tasks and people. I also met someone online who was abusive and initially could not stay away from contacting him. But, I found other people and am now busy with my other tasks. I highly recommend if you think he is harmful to you, then please try to restrain yourself from contacting him. I was also weak and kept contacting the abusive man until I realized that he was just using and abusing me for his own pleasure. If you come from an abusive family like I do, then you will be a magnet for abusive people. Thus, you must recognize the patterns of abuse and the cycle of abuse. I am trying to stay away from abusive people although I am attracted to them. It is a vicious circle and if you have no self-esteem, you will think you don’t deserve to be treated well. However, in the end, you will feel awful and spiral downwards until you won’t be able to get out of the abusive situation. I would do your best to be aware of this cycle of abuse and run away from it ASAP. Also, please try to find others who are supportive of you and understand you well. As I said, I would try to find ways to distract yourself from thinking about this person. I am doing this by motivating myself to do work and other enjoyable tasks. Also, I would try to take care of yourself. Are you in shape and eating healthy? You can start by taking care of yourself before worrying about others who don’t care about you. Best wishes!