George Clooney is the Jennifer Lopez of heartthrob actors: he's rarely, if ever, single for too long. This week, reports surfaced that George Clooney has been hooking up with Stacy Keibler, a WWE female wrestler perhaps best known for her former stint on ABC's "Dancing With the Stars." Clooney's publicist, Stan Rosenfield, won't comment on his personal life, telling The Famous on Thursday, "George is finishing his movie and I haven't had any way to reach him for the past several weeks." Keibler's representative has not yet responded to our request for comment. Meanwhile, the rumor continues -- building steam -- with a pair of reports on People.com and Us Weekly's website, adding legitimacy to the unexpected George-Stacy hookup. A source tells Us: "It's more than just a fling. ... They're basically exclusive at this point. They like each other's sense of humor. Obviously they're both physically attracted to one ano...