John Mayer

Taylor Swift once sang about her crush on Owl City.

The Canadian pop star is a longtime fan of the "Daughters" singer.

"So it's a fun thing people are doing without taking into account that I might see it and be affected by it?"

John has been testing out his hosting chops.

Check out cringe-worthy fashion fails from our favorite celebrity couples.

He 'accidentally' sang the pop star's song from 'Thank U, Next' instead.

The two stars were reportedly seen flirting at a 'GQ' party recently.

The pair set the record straight in the latest episode of Mayer's 'Current Mood' show.

John Mayer can't stop, won't stop flirting with Halsey.

Halsey and John Mayer have been flirting it up on Instagram, leading fans to believe they're more than just friends.