Josh Dun is engaged Debby Ryan.
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Josh Dun: Everything You Need To Know About The Twenty One Pilots Drummer

5. Josh Dun is engaged Debby Ryan.
Josh is known to be a private person who doesn't speak about his personal life however it's common knowledge that he's dating actress Debby Ryan. They began dating back in 2013/14 (when this photo was taken). On 23rd December 2018, Josh and Debby got engaged in New Zealand, with the couple sharing photos of Josh getting down on one knee on their Instagram accounts.