Zimbio, in photo: Kaley Cuoco-Sweeting, boyfriend Josh Henderson
4. Kaley Cuoco-Sweeting dated Josh Henderson
2007 - 2008

Cuoco and Henderson -- a former member of the boy band Scene 23 -- first met when he had a guest spot on the sitcom '8 Simple Rules... for Dating My Teenage Daughter' in 2002, but began dating five years later.