The reported split comes days after a photo of the two kissing sparked criticism throughout Jamaica, with many people disapproving of Bolt having a relationship with a white woman.
The 25-year-old Bolt had been dating Slovak, 28, for six months.
The couple met last year, when Miss Slovak was introduced to the world 100 and 200 metre record holder and Olympic champion by their mutual friend Tami Chynn, a Jamaican reggae singer with whom she runs a fashion line called Anuna and a boutique in Kingston, the island’s capital.
For all their celebrity-magazine looks the couple prefer to guard their privacy, spending much of their free time together at Bolt’s gated home in a suburb of Kingston, rather than attending red-carpet functions.
A friend told the Mail: ‘They are very comfortable together and easy.
They do quiet dinners in the country and trips to Montego Bay.
Bolt, who set a new 100 metres world record of 9.58 seconds in 2009, has been previously linked to Rebeckah Passley, a barmaid from London, and the Jamaican reality TV star Taneish ‘Lava’ Simpson.
In 2013 Lubica debuted her "Dream" collection at The Collections Moda fashion show in Kingston, Jamaica among other local talented favorites, Project Runway designers - Korto Momolu, Jerell Scott, Gordana Gehlhausen, and a NYC based designer for House of Sukeina, Omar Salaam.
It works because they are both successful and focused. She has her own life so she isn’t demanding.” Miss Slovak is expected to travel to London with Bolt this summer to watch him defend his Olympic titles at the 2012 game.
"She focuses on her designs, he focuses on his sport. But his latest romance has prompted discussion among fellow Jamaicans, and not all of it positive.
Miss Slovak emigrated to Canada with her father when she was 14 and went on to study fashion design at Ryerson University in Toronto.
She moved to Jamaica after “falling in love” with the island during a holiday in 2000.