Justin Theroux showed off a little too much of his physique in recent photos, but might explain why Jennifer Aniston is so attracted to him!

Cameras snapped a few photos of the screenwriter of "Iron Man 2" while he was filming a scene for his new TV movie, "The Leftovers." Aniston's fiancé was photographed running in a pair of loose gray sweatpants, which made it very clear that he wasn't wearing any underwear.

The 41-year-old star hasn't responded to all the attention on his privates, but Jon Hamm, star of "Mad Men," was not happy when a similar incident happened to him.

"They're called privates for a reason," Jon fumed, according to Intouch Weekly, when asked about the memes that had cropped up after going obviously commando on set. But he later added: "I guess it's better than being called out for the opposite."

Theroux is also in the news for deciding to postpone his wedding with Aniston. They cited work commitments and renovation on their home as the reasons for the delay, but reports say that the real reason is because the couple can't compromise on where to live after their nuptials. Jennifer wants to stay in Los Angeles, but Theroux has his heart in New York, The Daily Mail reports.

"Jen is firmly planted in LA, and doesn't like New York City," a source said. "She bought several apartments in NYC, hoping to make it home for the couple, but in the end, her heart just wasn't in it."