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When your spouse or significant other is getting mad because you're messaging and commenting with some random guy or girl on MySpace, and you're still acting like you're not totally into this other person.
'Hey, you're still talking to Sarah? I'm the one you married!'
'Why are you commenting on his page like you're best friends? I'm the one you cheated on last year!'
'You're gonna keep flirting with him on MySpace while I'm stuck here with your dumb face?'