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George Clooney's split from Stacy Keibler after two years of dating didn't exactly come out of nowhere. The couple had been on the rocks for months and had even been going through a bit of a dry spell, sexually speaking, before the breakup, a source reveals in the new issue of Us Weekly, on stands Friday.

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"They hadn't had sex in months," the source tells Us. "He's been in Europe, and she's in L.A., and they haven't seen each other in a long time. Some girls would be OK with that and just be happy dating George, but not her."

"She knew he wasn't looking to get married," another insider says. "But there was always that fantasy that he would commit. Sadly, it just ran its course."

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Indeed, as Us Weekly previously reported, the couple had been drifting apart for months. "It's been slowly falling apart for a while," one source told Us of the couple. Added another: "Stacy and George have been having ongoing discussions in the last few weeks. It wasn't a one-sided decision. No one got dumped. They both discussed it and realized it was better that they split."

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Linked since July 2011, the "Gravity" actor, 52, and the "Supermarket Superstar" host, 33, made their official red-carpet debut together at the Toronto Film Festival that fall. In the two years after, Keibler was a constant presence at Clooney's side, accompanying him to high-profile events like the Golden Globes and the Academy Awards. They also spent plenty of quality time at the Golden Globe winner's famed Lake Como compound in Italy.

In recent months, however, things were strained. "The end is near," one source predicted in March. "It's a matter of time."


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