1 definition by DuffyMcBluff

Top Definition
Your girlfriend's friends that constantly talk shit about you and desire nothing more than to a.) Get your girlfriend to break up with you or b.) Fuck around behind your back.

Most often, the Girlfrienemy is grossly overweight and chronically single. Dragging your girlfriend into her misery is her only source of joy.
John knew he had a new Girlfrienemy when his girlfriend started hanging out with the fat chick from work and arguments inevitably took place the day after about how shitty a boyfriend he had become.
by DuffyMcBluff June 13, 2011

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