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The destruction of a relationship (any kind, including marriage) by one person in one of two ways:

1. Knowingly blaming everything on the other person, projecting and using every single nasty thing one can think of to hurt the other and destroy the relationship willingly.

2. Unknowingly blaming everything on the other person, projecting and using every single nasty thing one can think of to hurt the other and destroy the relationship willingly.

The result of either of these 2 sub-definitions is the same: the other person (the victim of the Drive-by Breakup) is in the equivalent position of a drive-by shooting victim: lying on the side of the street, bleeding out and mortally-wounded
"Wow. That drive-by breakup was really bad!"

"Man, I'm telling you, it killed him. Drive-by breakups are no joke!"

"Watch out, you're headed for a drive-by breakup if you hook up with that person!"
by waterheart July 25, 2016
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