Ryan & Eva HANGING BY A THREAD

A SOURCE TELLS STAR INSECURITIES AND JEALOUSY ARE TEARING THE ULTRA-PRIVATE PAIR APART

IT was the biggest night of Ryan Gosling's career. At the 96th Annual Academy Awards on March 10, the Barbie star who was up for a Best Supporting Actor trophy-brought the house down with a rousing rendition of "I'm Just Ken," his hit (and Oscar-nominated) song from the movie's soundtrack. A-listers like Margot Robbie and Emma Stone danced and sang along, while Hollywood heavyweights congratulated him after his history-making performance.

There was one person who wasn't there to share in the magic of the moment: Ryan's wife, Eva Mendes.

"People were surprised Eva wasn't by Ryan's side," says a source. "It was a huge evening for him, and she was nowhere to be found." While the actress, 50, was spotted backstage earlier, and later paid tribute to Ryan, 43, on Instagram, Eva's glaring absence points to trouble in paradise for the couple of 13 years. The parents to Esmeralda, 9, and Amada, 7, are hanging on by a thread, the source says, as they struggle with jealousy and fights over expanding their family. "Ryan and Eva don't like to go to events together, but the Oscars were different. It just goes to show how separate their lives are."

TAKING A BACKSEAT

Behind the scenes, Eva's feeling resentful of Ryan, says the source. In 2012, she put acting on the back burner to focus on being a mother and wife. "Eva has given up a lot to support Ryan and be a hands-on mother to their two daughters," says the source. Now, as his career continues to skyrocket, Eva is feeling insecure and having trust issues.