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.

Jessica Simpson's love life is ~irresistible~.

The 2000s had some pretty questionable celebrity fashion moments.

He's a huge fan of her love ballad.

They're almost unrecognizable!