I could have used this line at work. I was sitting with a co-worker today, and she was looking at a magazine. She say those 2 should just get married. I said what 2. Brad and Angelina, she says. I said why should they?
Well because when you aren't married, it's much easier to walk away, than if you are married.
I was too shocked to say anything, she's divorced, so obviously, being married didn't stop her (or her ex) from walking away.