Larry King‘s decision to file fordivorcefrom Shawn Southwick King did not come as a shock to those who knew the couple well.

Though Larry and his seventh wife were married for 22 years, a source close to the television personality tells PEOPLE that their divorce was “a long time coming,” especially after Larry’srecent health scareand Shawn’salleged affair in 2016.

“Larry was close to dying and it really shook him,” the source says. “He realized that he hadn’t been happy for a long time.”

“They fought and argued all the time,” the source continues. “But also it’s about protecting his kids. Shawn and Larry had essentially been separated for a decade. They sleep in separate bedrooms.”

“Larry is no saint, but he was tired of all the drama,” the source adds, confirming that previous reports of Shawn’s alleged affair were true. “This was a long time coming. The marriage has been over.”

Shawn did not immediately respond to PEOPLE’s request for comment.

Jonathan Leibson/Getty Images

Shawn King and Larry King

Larry and Shawn, 59, wed on Sept. 5, 1997. They share two sons: Chance, 20, and Cannon, 19.

On Tuesday, Larry’s lawyer confirmed to PEOPLE that he hadfiled for divorce from Shawnafter nearly 22 years of marriage. The Blastfirst reportednews of the split.

According to court documents Larry filed on Tuesday in Los Angeles Superior Court. He cited irreconcilable differences, and the date of separation is listed as June 6, 2019.

The Kings’ marriage was a rocky one: Sources confirmed to PEOPLE in 2016 that the broadcast icon was distraught about an alleged yearlong affair his wife had been having.

Larry King with his wife Shawn and their son Cannon.KENA BETANCUR/AFP/Getty

Larry King (C), his wife actress Shawn King and their son Cannon King

But Larry and Shawn denied any reports of cheating in an interview withHome & Familyin August 2016.

“You said an interesting word, ‘rumor.’ I’ve been in the business — next May, it’ll be 60 years — and I’ve dealt with rumors a long time,” he said. “Interviewed people involved with rumors. Rumors are what they are — they’re rumors. And I tell you the truth, I don’t pay any attention to them.”

Added Shawn: “Last week, there was a rumor going around about Larry and a speech he made in Kiev. This week, I’m the latest pinup girl. You just have to develop a shell around yourself and not get hard on the inside, and stick together.”

It’s not the first time he has submitted paperwork to end their union.

In 2010, Larryfiled for divorceafter theNational Enquirerreported that Shawn had an affair with one of their sons’ baseball coaches, Hector Penate. Penate later admitted to the affair, but the couple decided to stay together.

The CNN host has previously beenmarried seven times (to six other women), while Shawn was married once before.

source: people.com