american boyfriend s proposal taking a tragic turn, diving underwater to show his girlfriend a note and the ring, but he did not survive. here s abc s steve osunsami. reporter: this is what love looks like. 40-year-old steven weber wanted his girlfriend to understand the depths of his heart when he proposed to her underwater last thursday. he said, i m going to marry kenesha. i m going to ask her to marry me. reporter: they were staying at this luxury resort on pemba island in tanzania. here we are in the underwater room. amazing. here comes steven. reporter: kenesha antoine was inside their out-of-this world underwater bedroom that rents for $1,700 a night, recording on her cell phone, when a surprise came to the window at 30 feet deep. it was the love of her life with a ring and a message that said, i can t hold my breath long enough to tell you everything i love about you. she said yes, a million times yes. but after this wonderful moment he drowned.