George Clooney and Stacy Keibler holdings hands and go to a restaurant in Berlin on March 16, 2013. Credit: Splash News Online

George Clooney and Stacy Keibler are holding on … for now. The Argo producer stepped out with his girlfriend of nearly two years in Berlin on Saturday, March 16, holding hands as they headed to dinner with pals Matt Damon and producer Grant Heslov.

The actor, who is in town to shoot upcoming drama The Monuments Men, kept things casual in jeans, a black coat and grey scarf, with an eye-catching moustache to boot.

Keibler, 33, kept her own color palette similarly tame, in a black coat, flats and bright red lipstick. 

But sources recently told Us that things might not be as peachy keen as they may seem on the surface. According to one insider, "the end is near" for the couple, who have been dating since late summer 2011.

"They have little in common," another source told Us. "She likes to go out and have fun. She's been feeling the age difference."

The 51-year-old actor and his former WWE pro wrestler gal pal have not spoken out publicly to address the rumors. 

On Friday, an excited Keibler simply tweeted about her plans to join Clooney abroad in Germany.

"Hello Berlin!! Glad to be back!" she tweeted on Friday, March 15. "Excited to spend some time here."