I see her just talking to some man and all of a sudden all these thoughts start going in my head about how she's betraying me, she's going to leave me, she doesn't love me. Why Men Batter Batterers use violence because it works in the short term.
Violence puts a quick stop to an emotional argument that is getting out of control.
It's an outlet for frustration from many sources. It usually gets the victim to comply with the wishes or demands of the batterer. His normal need for intimacy is mixed with fear that his partner can destroy him emotionally. This leads to jealousy, manipulation, and a desperate need for total power and control over his partner. He sets out, often unconsciously, to make the woman in his life less powerful so that she will be as dependent on him as he is on her.