Newsflash! Social media can screw up your love life

Shayna Hefner never expected MySpace to turn her life upside down. When she joined the social network years ago, she wasn’t sure what to do with it. One night, she and her cousin started seeking out people from Hefner’s past: old friends from high school, old co-workers, even ex-boyfriends. At the same time, Hefner’s life…