<human>: Can you summarize the given text in a few sentences?

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So, met her for lunch today. I could tell she was a little down, and when I went to hug, and put hand on back, she kinda twitched.. 

Sat down, and basically asked her, wtf is up with this?? So, after all the trying to find out, here are the reasons! 

All BS: She wanted boob job, he was against it. Supposedly they agreed. Then he is pissed because they are too big.(IMO, big but not obnoxious) She is embarrassing him. She is sex crazy.. 

He thinks women should not be like that. She might be a little sex crazy, but not that bad.. About 18 months ago, which was few months after boob job, he moved to the other room. Also ended up finding his previous girl friend in India. So that is why he wants to go back. 

She won't go back, he keeps getting mad and beats her. This time however, she says she let the guard down, and he was pretty successful in hurting her good. He beat her with the metal end of his belt. Unfortunately she won't leave the house. This is so depressing for me. 

I just can't imagine why someone would do this.. Probably for the first time in my life, I just couldn't get aroused for a afternoon quickie..(that was kinda embarrassing) 

I have 2 younger sisters, and if their spouses did this, I would be kicking some ass.
<bot>: We have a girlfriend in 3way relationship. Soon to be ex husband is beating the crap out of her for silly reasons.