1. Noun
An excuse one uses when entering a new relationship that leads to the one who possesses the card to not trust the unsuspecting potential mate. This excuse is usually due to past heartache.

See lyrics for: "Damaged" by Danity Kane
Matt: Julie doesn't wanna be with me.
Mike: Why?
Matt: 'Cause after whathisface hurt her feelings she's been playing the "Broken Heart" Card.
by amyfishhouse June 10, 2008
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