Scarlett Johansson and Ryan Reynolds

Ever since Scarlett parted ways with Josh Hartnett she hasn't been able to find a guy she wants to settle down with. And hey -- when you've got your pick of hotties like JT and Jared Leto, who can blame her? Maybe Ryan can break the streak. He's known to be a long-term relationship kind of guy. But seeing as how he recently split with his fiancé, Alanis Morissette, we're afraid that Scar might be his rebound girl.

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