For the past year, the singer and talk show hot Kelly Clarkson has been embroiled in a bitter divorce from Brandon Blackstock. This has made her relationship with her “The Voice” co-star Blake Shelton, who has been managed by Blackstock for years.

Now, however, Shelton has definitely taken sides in this divorce, as he has terminated his relationship with Blackstock, leaving him without his biggest client. This was meant to be a show of loyalty to Clarkson, who Shelton considers to be a close friend.

“Blake and Kelly are extremely close,” an insider told US Weekly. “Their friendship and bond goes beyond the business.”

Since losing Shelton as a client, Blackstock has reportedly quit the music industry altogether.

“Brandon has no involvement with Blake’s management,” the insider added. “His full-time job is no longer in California.”

Shelton revealed back in 2012 that he had encouraged Blackstock to propose to Clarkson.

“I told Brandon, ‘Man, you need to grow up and you figure out that you need to marry this girl,’” Shelton told Hollyscoop at the time. “I am going on the record saying, I will do the music at the wedding or whatever you want to do, I’ll be that guy … cause you need to get your head out of your ass and ask that girl to marry you.”

Court documents filed earlier this month show that Blacktock has said that he intends to become a rancher.

“The evidence in this case shows that after the date of Separation, Respondent made a very deliberate choice to change his life and become a rancher full-time,” the judge wrote in court papers. “He testified that he is not devoting any effort toward expanding his client list and music management business.”

“Respondent has made a very deliberate choice, that he testified he planned for a long time, to significantly change his lifestyle from primarily working in the music and entertainment industry to working in an agriculture community and lifestyle involved in full-time ranch and cattle work,” the judge added.

Clarkson filed for divorce from Blackstock in June of last year after seven years of marriage and two children together. She admitted earlier this year that co-parenting with Blackstock has been “tough.”

“It’s tough. … I know with me and Brandon, it’s just a difficult thing because we’re in different places, and it’s like, we both agree on the main things, but it’s a hard thing when you’re not together all the time, for me personally,” she said. “As long as you make sure it’s about the children and their best interests, then we’re both on board.”