Carter Evans has always had the upper hand in relationships, but that all changes during her senior year of college when she meets Sean O'Malley. It's too bad this relationship can't be simple like her others have been. Unfortunately, the whole situation is complicated. And crowded. No matter how close she and Sean get, there's always one other girl in the picture. That girl's boyfriend is just as entangled, too. If a love triangle involves three sad souls, then Carter is definitely caught in a love rectangle.