Jackson, who resides in South London, would meet up with Usain when he visited the area.
However, the sprinter’s busy schedule kept them from being together in the long-run.
"Kasi Bennett is a stunning Jamaican model and fashionista with more than 219,000 followers on Instagram.
According to her Instagram profile, she is the founder of Jamaican children’s charity Project Kase and managing director of 88 Elevate Marketing House.
Before dating the fastest man in the world, Jackson was linked to PR director Stephen Hector, who runs an all-inclusive resort company.