May 18, 2016 10:10 AM

Even Grammy winners aren’t immune to heartache.

One of the ballads on Meghan Trainor‘s new album Thank You was inspired by a real-life relationship, the singer tells PEOPLE exclusively.

“[It’s] about this situation that I had since I was 18,” she reveals. “We live in different places and it can never work out, but for some reason, we always come back to each other and we’re always like, ‘We shouldn’t do this!’ ”

The song is “one of the favorite songs I’ve ever written in my entire life,” says Trainor. “Just every part is perfect. The lyrics in the chorus are very heartbreaking and real.”

After cutting the track, the “No” singer “put the headphones on his head and said ‘Listen, wrote you a song,'” she says. “I teared up, and he was like, ‘I didn’t know, but I hoped.’ We were both trying to tell each other that we love each other because we thought it would never happen, and then we finally exploded and was like, ‘Hi, I have to tell you I love you no matter what happens.”

Meghan Trainor
Michael Tran/FilmMagic

For much more on Meghan Trainor’s album and her first big splurge, pick up the latest issue of PEOPLE, on newsstands Friday.

Though she finally got her unspoken feelings off her chest, Trainor is still single – and that’s the way she likes it for now.

“I’m just dating myself,” she explains. “If I have little flings, they always die ’cause of the schedule, or the guy’s not right. It’s a tough job to date a pop star! Whoever will be able to do it will be the one.”

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