Grigor was rumoured to be dating female powerhouse player Serena Williams in early 2012 after meeting through their mutual coach Patrick Mouratoglou. Grigor started dating Russian tennis beauty Maria Sharapova in late 2012, adding fuel to the fire of her rivalry with Serena.
But after Grigor ditched Patrick, he also reportedly dumped Serena, 35, with her revealing in an interview a few weeks later: "I have given up on dating. The couple enjoyed a two-year romance before splitting in 2015, with Grigor insisting he wanted to focus on his tennis career.
Tennis star Grigor started dating former Pussycat Doll and X Factor judge Nicole in late 2015, with their romance being made public in January 2016.
Despite the 13-year age gap, the couple have been together for almost two years and generally keep their romance on the down low.
It is believed Nicole got friendly with the 27-year-old soon after his relationship with Maria ended."Nicole is dating Grigor. But they’ve been careful not to be pictured together because they don’t want the pressure of the relationship being in the public eye," a source told The Sun.