The 37-year-old singer and the 24-year-old tennis player confirmed their relationship with a public kiss at the Brisbane International Tournament.
The public smooch comes after months of rumours. Nicole, who split up with F1 champ Lewis Hamilton last year, has been at the tournament all week, supporting Grigor from the VIP seats at both his singles and doubles matches.
Grigor on his side, split with Maria Sharapova in mid 2015 after a two year relationship, when rumours of new love started. He had previously dated Serena Williams.
Grigor will play Federer on quarter finals.
