Gracie is used to living alone, but when her sister's life falls apart, she finds herself with company. Her normally conservative sister goes a little wild, going through men like most people change outfits, and all Gracie can do is try to ignore it. When her sister starts dating a guy named Tucker, though, Gracie can't help but be a little jealous. Tucker is everything she's dreamed of in a guy. Smart, sexy, funny, and sweet, he's a dream come true. Unfortunately he belongs to her sister, and she would never do anything to stain their relationship...or so she believed. But a sudden bold move by Tucker finds her resistance to his charm crumbling. Will Gracie be able to resist or will she fall willingly into the arms of her sister's boyfriend?