John Mayer claims he still listens to his 2013 duet with ex-girlfriend Katy Perry

John Mayer loves this track “Unconditionally.”

The musician revealed Monday that he still listens to his 2013 duet with his then-girlfriend Katy Perry, “Who You Love.”

“Isn’t that great? I’m glad we did that,” Mayer, 45, said on “Watch What Happens Live With Andy Cohen.”

“I listen to that every once in a while and I go, ‘I like that song.’ I like the way that she sounds on the song. She got that way of singing down and met the challenge of that song. It was so much fun.”

According to the “Gravity” singer, the track served as a “prototype” for his 2021 album “Sob Rock.”

“It was just at the point where I was saying, ‘Why can’t I make music from a different era?’” he told Cohen, 55. “If I love a style of music and I want to make it, like a genre, why can’t I make music that I was pretending was from a different era?”

Mayer and Perry, 38, dated on and off between 2012 and 2015 shortly after the “New Light” singer ended his romance with Taylor Swift.

Social media users were quick to sound off on the revelation.

“I was rooting for this couple, it’s a shame it didn’t work out, what matters now is that you’re happy with the one you love,” stated one person.

“The song is really perfect, Katy’s relationship has paid off too much,” gushed another.

“I think it’s mature to talk about your ex like that,” commented a third person.

“Miss them,” a poster rued.

The Post reached out to Perry for comment.

Mayer admitted that several songs on his 2017 album “The Search for Everything” were about the “Dark Horse” songstress and their breakup.

“Who else would I be thinking about?” laughed Mayer while talking about his song “Still Feel Like Your Man” with the New York Times.

“And by the way, it’s a testament to the fact that I have not dated a lot of people in the last five, six years. That was my only relationship. So, it’s like, give me this, people.”

Since ending things with Mayer, Perry started seeing Orlando Bloom. They got engaged in 2019.

Perry and the “Pirates of the Caribbean” actor have a 3-year-old daughter.