Blake Shelton just wants to focus on 'The Voice' after filing a divorce to his estranged wife Miranda Lambert.

A source close to Blake told the People that the 'Sangria' hit maker was really upset by the split, but he's been quiet about it and just focusing on his job, which is of course being one of the mentors of 'The Voice USA.'   

The source revealed, ''He's devastated, but he's been really private about it. He's focused on the job and has been as engaged and friendly as he has always been.''

The Voice coach even trying to cope up with the ordeal through his humor.

On Tuesday, Blake posted a joke after on Twitter after his workout.

He Tweeted, "Just got off the treadmill. This calls for a drink. Bitch..."

Then Shelton Tweeted another joke after a fan tweeted, saying that he cannot imagine Blake in a treadmill.

Blake wrote, "It looked like one of those messin' with Sasquatch commercials," referring to a Jack Link's funny commercial.

According to TMZ, Blake filed the divorce after he found out that Miranda was cheating on him not only once but twice.

Shelton heard a lot of rumors that Miranda has been hooking up with the country singer Chris Young, although the two were seen together for a couple of times, it was not Chris the reason that Blake decided to pull the plug of their marriage, it was another guy, which is not a country singer.

And because of his involvement, Young clears his name through his Facebook page.

The 33 year old country singer wrote, "I don't normally address gossip but in this case I will. My name has been mentioned as a contributing factor in Blake and Miranda's divorce. That is totally FALSE. They are both my friends and I would not betray that friendship. Just wanted to clear that up. Love you guys - CY."