Some people get hooked on drugs... Some people get hooked on fat sluts that ruin their lives. I'll never understand the desire to stay with a girl that refuses to give you space and show you some fuckin respect, let alone a fat one that fucks every swinging dick that'll pay attention to her.
Basically your friend is fucked for life. Once he bucks this heifer, he'll just find another stupid bitch to control his life. I'd put a $50 on it. I have "that friend" too...