Monzo made the video with a GoPro camera, one of White's sponsors, and with the help of her teachers and fellow students.
When Monzo didn't hear back from the two-time Olympic gold medalist, she found another date. White, who never went to his own prom, decided to surprise her at the event last Friday.
"It was crazy," she added. "On the stage that was there -- they just dropped the curtains. I turned around. I was speechless."
White and his band, The Bad Things, performed for the crowd, before hitting the dance floor with Monzo and her friends.
When they slow-danced to the Etta James classic, "At Last," White conceded to appeals from the crowd and gave Monzo a friendly kiss on the cheek.
Celebrity Breakups and divorces of 2014 [PHOTOS]