My mom is upset at what my boyfriend said to my brother and want him to apologize

My brother was bitching and moaning and crying because his girlfriend officially left him and blocked him after he abused her for 3 years. He was crying and saying how terrible of a person he is. How he self destructed that entire relationship and how all he knows how to do is ruin things. My mom was telling him the fact that he admits he was wrong and that he apologized to her shows he's a good person. He kept crying about it and asking if he should reach out again and my boyfriend said don't. He said he just wants to apologize again for being so awful. My boyfriend said and I'm paraphrasing "Dude, say you're sorry and leave her alone. Instead of sitting here like a little bitch crying because someone YOU have broken left you, go get therapy. You're rich enough for it. I don't feel any sympathy for you because instead of getting help you're over here crying because you want sympathy. You're not getting it from me. I'm also not going to give you a cookie because you apologized to someone after you chose to break them down and make them feel small because you're an insecure loser little boy. Go get fucking therapy. Get some help. She should be able to get a tax write off because you were charity work." My boyfriend is a very quiet person so to hear all of that come out of him was shocking. My brother got upset and left and my mom thinks my boyfriend kicked someone when they're already down. My boyfriend said he meant what he said and he would say it again. I don't disagree with him. I'm just stressed with my family now fighting with him.