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1 definition by Sroek

Mickey Black's definition is fucking retarded.

There is only one simple explanation for the term: An unhealthy romantic obsession or fixation for/on one person. This mental disease will often interfere with your ability to attract said person, due to your clingyness.
I'm suffering from oneitis because I have a massive crush on that one girl who works at that one store.
by Sroek July 04, 2010
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