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A behavior demonstrated by males who are a relationship (and more often than not a new relationship). One with the Girlfriend Complex goes out of his way to insert references to his girlfriend in every facet of conversation as a way of asserting dominance over his buddies, friends, or acquaintances.
Jim, who just began a new relationship has a case of the Girlfriend Complex

Buddy: "Wow Jim, I'm liking the new TV, really nice setup you got here."

Jim:"Thanks, yea my girlfriend told me the same thing last night when we were watching a movie. But now that I think about it, I don't think she was referring to the TV."
by TC_Watson February 17, 2011
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