John Mayer proclaims his love for Katy Perry on stage: Who's the hottest music couple of all time?

Someone's got the hots for Katy Perry! Well... lots of people have the hots for Katy Perry. But John Mayer actually proclaimed his love for the "California Gurls" singer in front of everyone at his concert Saturday night.

SODAHEAD SLIDESHOW: See the sexiest music couples of all time!

Kicking off his "Born & Raised" tour Saturday night in Milwaukee, John Mayer dedicated his new song "A Face To Call Home" to the pop star, calling her "my face to call home." He also gushed that Katy was "more incredible than I ever thought."

Save the love fest for backstage, dude! These two have been in an off-and-on relationship since they started dating last December, but it looks like the couple is very much "on" right now.

But are they the hottest couple in the music industry? John and Katy have some tough competition coming from Jay Z and Beyonce, who have been music's power couple since they wed in 2008.

Then, there's rock royalty Ozzy and Sharon Osbourne, who've been going strong for over 30 years now. And who can forget pop star pair Justin Timberlake and Britney Spears? Sure, they're not together anymore but the duo deserves an "honorable mention" in the sexy music couple list for sure.

From John and Katy to Jay Z and Beyonce, we want to know who you think is the music industry's hottest couple ever.