Fan Beau Barkley roped in the A7X frontman to help him pop the question to partner Micah Manzanarez onstage during the band's recent show as part of the Mayhem Festival at the Red Rocks Amphitheatre in Colorado, USA.

Barkley works behind the scenes of the Mayhem tour and says he wanted to make the proposal special by way of apology for all the time he spends on the road away from Micah.

On Facebook, he says: ""This was a gift from my tour family and myself for all the lonely times I have put her through."