A man has drowned while proposing to his girlfriend underwater at an idyllic island off the coast of Tanzania. It is unclear what went wrong during the proposal at a popular honeymoon destination.

His girlfriend Kenesha Antoine posted a video on her Facebook page. Video shows her boyfriend proposing to her through the window of their underwater hotel room at the luxury resort.

“You never emerged from those depths so you never got to hear my answer, ‘Yes! Yes! A million times, yes, I will marry you!!’,” she wrote in a post confirming his death.

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Her video shows Steven Weber swimming up to the window, and pressing a handwritten note against it which read: “I can’t hold my breath long enough to tell you everything I love about you, but everything I love about you I love more every day. Will you please be my wife, marry me.”

He then pulled out a ring as Antoine squealed with joy while filming. It is unclear what went wrong during the proposal.