My bf hits. himself ! Help.:(?

Yesterday, I tried to break up with my bf. He started crying,. and hit himself in the head. extremely hard. Multiple times. I don't know why he does this... he said he loses his emotions. :( . He has. done this before in the past too. But yesterday made me so. sad. He kept. doing it, begging me. not. to. do this to us. I said fine. Was wondering if this was the right choice... and I remember during it. all. he kept telling me he was. afraid he was. gonna hurt. himself. if we broke. up.:(((( I know. he. needs. help, and that's why i stayed. But do. you. really think I should. stay or. no? :((((
My bf hits. himself ! Help.:(?
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