Kristin Smith

Tiger Woods got his ex-girlfriend Kristin Smith to sign a non-disclosure agreement to make sure she kept her mouth shut about their nuclear breakup ... but she wants out of their deal -- and now they're locked in a nasty legal war. TMZ Sports has learned ... Woods and Smith (who dated from 2015 to…

Tiger Woods has broken his silence about his dating life to let everyone know he broke up with his hot blonde girlfriend, Kristin Smith ... last year. Photos of Woods and Kristin hanging on a boat surfaced this week -- sparking reports they were galavanting on the day of Tiger's DUI hearing. But…