My abusive brother is getting married, can an abusive man change?

Anonymous
I have a very abusive brother who constantly beat me and abused me and blackmailed me for years. He would control my clothes and when I went out and with who and if he saw me with a guy he would beat me. He broke my thumb and got my face on a plate until it broke once when he saw me wearing shorts at home because a man was working on our yard and he couldn’t even see me. He blackmailed all his 4 ex’s and sent their naked pictures to their fathers and brothers if they left him and he would threaten them and he also beat the shit out of his ex and took him to court and she won the case against him. In the document i saw how disgusting and abusive he was. He would choke her and put a sock on her mouth while beating her and pushing her. My dad had to pay for the damages, he has no job because he keeps getting fired for beating and bullying people. He for fired from 5 different jobs if not more. He doesn’t have a license , not a car and sits at home 24/7 doing absolutely nothing. He’s an 24 and he met a divorced woman who was in a DV shelter because her ex beat her. She is very well aware that my brother is aggressive but she doesn’t know his past. I think she deserves to know because I can’t bare see another girl get hurt from him. He threatened her once to expose her to her abusive ex where she was at. I don’t talk to him at all and we both have a really bad relationship even tho we live in the same house. I wonder if an abusive man can change if he really loves her or does she deserves to know the truth?
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She also have a daughter from her previous marriage
My abusive brother is getting married, can an abusive man change?
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