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1.
the kind of relationship that happens when a best friend goes away whether death or moving or what ever circumstances, and the other best friend starts dating the girl that he ended the relationship with due to death or moving etc.
Bob: hey did you here John Moved to California

Jack: yea him and Mary broke up there relationship and then his best friend Justin started dating her

Bob:Well that sounds quite like a Pearl Harbor Relationship
by Boobiesboobiesboobies October 21, 2010