My best friend recently cheated on her boyfriend who she was dating for around 2 years. She always had doubts about really liking him but she still went on with the relationship. Recently she went for a month to another city for an internship. There she met a new guy and she claims that they had a connection. They eventually hooked up. Her boyfriend found about this and started talking to me. He was really really really upset, wanted to kill himself kind of upset. I calmed him down for the meantime, but it is very difficult for him to deal with it. Meanwhile i am angry my friend. Recently she met her boyfriend to tell him the whole story. She told him that they did more than kissing. Her boyfriend got angry and held her neck and hurt her arm, and then he stopped and left. I know its not right, but is it justified that he held her neck?