Hottest Celebrity Hookups of 2012
Amanda Seyfried, Josh Hartnett
The Les Miserables actress quietly began dating Hartnett in January. But sources told Us Weekly in June that the two were cooling down. "She's kind of a super clingy girlfriend and he doesn't want that," one Hartnett insider told Us Weekly. "He really likes his space and she wasn't happy about that." But the insider added, "They might hook up when she's back in town. He thinks she's fun and interesting."