Bolt has kept his love for Kasi secret, saying recently only that he had been dating a woman back home for two years.
But Christine, from Kingston, Jamaica, revealed the couple have in fact been an item for three years.
Usain popped the question on the lovely beaches side of Bora Bora an Kasi surprisingly accepted Usain engagement request after straining for 10 minute.
The following day, Kasi shares photos of herself on the sands in Bora Bora, a small South Pacific island northwest of Tahiti in French Polynesia, known for its scuba diving.
The story has since been calculating on social media with both negative an positive comments.