A phenomena known to occur when one party of a relationship must choose between their current partner or an outsider for whom they also have feelings. Statistically the sitting partner takes the advantage by merit of a proven track record and the ease with which a standing relationship can be maintained.
After it came out that she was already involved, it became apparent that i was once again about to fall victim to the incumbent advantage.
by Harold the tax man September 26, 2010
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