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1. Someone who at one point of your life you liked/loved and/or was very special to you (i.e. boyfriend, girlfriend, significant other, someone you dated with potential) who now is nonexistent or acts brand new.
1. "Boo, now don't you go off to Vegas with your boys for a weekend and come back acting like a once upon a time boo!"
by Green Tea Mochi March 25, 2011
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