Tim McGraw's latest duet isn't with Faith Hill, but that doesn't mean his wife has any reason to be jealous.

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On Tuesday Diamond Rings and Old Barstools (featured below) was released as a single off McGraw's latest album, Sundown Heaven Town.

The romantically-themed song is the first duet ever between McGraw and Catherine Dunn and received a stamp of approval from Taste Of Country on Tuesday. 

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While McGraw has performed with plenty of other artists, he is best known for collaborating with his wife. The couple have received much acclaim for their latest duet, Meanwhile Back At Mama's, and even filmed the music video for it at their real-life home. The song earned the couple two Grammy nominations.

So does Hill have reason to be jealous? Is someone moving in on her man? As it turns out, the last person who'd make a move on McGraw is Dunn. It turns out the two are cousins and McGraw thinks it's actually pretty funny that his first time collaborating with Dunn is for a romantic tune.

Married for 18 years, McGraw and Hill continue to live quietly with their three daughters. He recently spent a low-key New Year's Eve at home with his girls and couldn't have been happier with it.

"For me, New Year's Eve I like to be low-key and hang out with my family," he told Great American Country back in December.

Sundown Heaven Town was released in September of 2014.

Tags: Faith Hill Tim McGraw celebrity couples