Music Katy Perry Leaves Sweet Comment on Ex-Boyfriend John Mayer's Instagram for His Dad's 90th Birthday: Pic! By Alex Ungerman 12:30 PM PDT, October 12, 2017 This video is unavailable because we were unable to load a message from our sponsors. If you are using ad-blocking software, please disable it and reload the page. 12:37John Mayer Reveals His New Music Is About Ex Katy Perry: 'Who El…03:44Watch Shawn Mendes Fall While Trying to Get a Shirtless Photo02:06Super Bowl LVI Halftime Show: Get a First Look!03:01Janet Jackson Addresses Justin Timberlake Super Bowl Controversy…03:47‘SNL’: Watch Kristen Wiig and Willem Dafoe Crash Will Forte's Ho…01:37Go Behind the Scenes of ’9-1-1: Lone Star’ With Rob Lowe! (Exclu…02:41Bob Saget Funeral: 'Full House' Cast and More Attend Memorial06:09Remembering Betty White: 'The Golden Girls' Glory Days and a Loo…09:12Music Stars Who Made Major Moves in 202102:18Cynthia Nixon on ‘And Just Like That’s Finale and Premiere of Ne…03:44John Stamos Channels Bob Saget's Signature Humor in Touching Fun…04:13John Stamos Honors Bob Saget With Touching Tribute Video04:10Mary-Kate and Ashley Olsen Pay Tribute to 'Full House' Dad Bob S…10:42‘Darcey & Stacey’: Darcey and Stacey Dish on Season 3 and Darcey…09:06New Year's Eve 2021! How to Celebrate With Ciara and Miley Cyrus17:57'Summer House's Paige DeSorbo on Season 6, Craig Conover Love Tr…02:31Kanye West Is Being So Public With Julia Fox Romance to Make Kim…09:18Remembering Bob Saget: ‘Full House’ Cast and Famous Friends Pay …02:32Ghislaine Maxwell Found Guilty of Sex Abuse Charges Tied to Jeff… Katy Perry's still got love for her ex -- and his family! The Witness singer left a comment on John Mayer's Instagram on Wednesday after The Search for Everything singer-songwriter shared a sweet snap of him and his dad in honor of his pop's 90th birthday. "Happy 90th Birthday, Dad! Leave doting comments about my dad below," Mayer, 39, captioned the pic. "He’ll love scrolling through it. Also please stop this train. Thank you."View this post on InstagramA post shared by John Mayer 💎 (@johnmayer) MORE: Russell Brand Says Marriage to Katy Perry Was 'Very Wonderful,' Wishes Her 'All the Best' "Looking fantastic as ever!" Perry commented. "Happy birthday friend."instagram.com/johnmayer MORE: John Mayer Responds to Katy Perry Calling Him the 'Best Lover' She's Ever Had A happy 90 years, indeed! Mayer, who openly spoke about his former flame's influence on his most recent work earlier this summer, shared what song about an ex makes him so sad, he can't play it live anymore.Watch the video below to find out which one.John Mayer Reveals His New Music Is About Ex Katy Perry: 'Who Else Would I Be Thinking About?' This video is unavailable because we were unable to load a message from our sponsors. If you are using ad-blocking software, please disable it and reload the page.