Mandy Moore always maintains a friendship with her ex-boyfriends - because they all made such an impact on her life. Although she is only 22, she has been involved in several long-term relationships with stars like tennis ace Andy Roddick and actor Zach Braff, and she refuses to lose touch with exes when the romance ends. Moore, who was recently spotted partying with former boyfriend Wilmer Valderrama, says, "People are in your life for a reason, and I don't think you ever stop caring about people you've been close to. "Well, I don't at least."