The JLS singer invited Amy Jane from girl group Vida to Antigua for his band`s recent lads` holiday - which also saw bandmate J.B. Gill bring along his girlfriend Chloe Tangney - and the new couple managed to get to know each other by slipping off for some quiet time together on the Caribbean island.
A source said: "It has been nice for Oritse and Amy to spend some time together.
"Oritse is one of the hardest-working members of the group, plus he spends a lot of time looking after his mum, so it has been nice for him to relax for a bit.
"They get on really well and are relaxed in each other`s company. It might be a big group holiday but they`ve still managed to find a bit of time to themselves."
But the 25-year-old star - who recently embarked on a diet of "clean foods" ahead of the `Everybody in Love` hitmakers` `4 Dimension` European tour - has laughed off reports of a new romance, insisting he has just been holidaying with his friends.
He wrote on twitter: "jus so everyone is clear, i`m havin a fantastic time on holiday with my MATES!!!! Ori x (sic)"
Oritse has grown close to Amy - who is also known as AJ - after managing her girl group Vida, who are inspired by the Spice Girls and are hoping to bring back the "girl power days" with the help of their new single `Boombox`, which is out on September 9.