Scarlett Johansson and Justin Timberlake?

Justin Timberlake is reported to be dating Scarlett Johansson, following his split from girlfriend Cameron Diaz. Last week it emerged that Cam and Justin had called time on their three and a half year relationship in December, and now we have an inkling of what could be behind their split. Scarlett Johansson has an off-on relationship with actor Josh Hartnett. The Match Point star recently starred in Justin's music video What Goes Around Comes Around. we Crafty Justin attended the premiere of his latest film, Alpha Dog, with his mother, but reportedly met Scarlett at the after-party. At 22, Scarlett is 12 years younger than Cameron Diaz.