False. I never have taken one back, although the guy I was engaged to when I was 21/22 and I are on friendly terms when we run into each other. It was painful when we split up, but not long after, we both realized it wasn't meant to be and no one was to blame, we just were too different for the 'opposites attract' theory to even be considered. We're both happy, so all worked out for the best.
TPBM has ever been betrayed by a friend blabing a secret.