Because you like Katherine Murphy in Just Go With It

Kathryn Merteuil may be a vain sociopath, but you won't be able to look away. See them in Cruel Intentions.

Cinderella will sacrifice herself to keep her family's memory alive. See them in Cinderella (Live Action).

For now Lindsay Weir is a geek, but who knows? Maybe she fits in better with the freaks. See them in Freaks and Geeks.

Oliver Tate is extremely articulate but hopelessly awkward. That's not a recipe for teenage happiness. See them in Submarine.

Carol Aird is driven to fight to make her life better, regardless the consequences. See them in Carol.

Samwell Tarly is a scholar, not a fighter. But that's not good for an aspiring member of the Night's Watch. See them in Game of Thrones.

Sally Albright is high maintenance who she thinks she's low maintenance. But she's still worth it. See them in When Harry Met Sally....

Burton Guster is a level-headed investigator with a "Super Sniffer" nose. See them in Psych.

Mark Sloan is the best plastic surgeon and biggest playboy the hospital's ever seen. See them in Grey's Anatomy.

Marshall Eriksen is a lawyer in love who is enjoying life. See them in How I Met Your Mother.

Though she can seamlessly flit between glamorous identities, Sydney Prosser is more vulnerable than she pretends to be. See them in American Hustle.

Warm and caring, Kitty Forman acts like a mom towards all of her kids' friends. See them in That '70s Show.