Superstar Mariah was walking down the stairs in wedges when she lost control and missed her footing, but luckily, one of James' staff members was there to rescue her in time!
Mum-of-two Mariah looked beautiful in a patterned swimsuit and pink sarong, and after the near-tumble, she enjoyed lunch with James.
'Hero' singer Mariah confirmed her romance with James this month when the couple openly held hands in front of photographers while holidaying on the island of Capri.
Mariah has been enjoying a romantic trip around the Mediterranean, with her and James seen in Portofino, Italy, and the Western Wall in Jerusalem.
A source told People that Mariah and James "are enjoying spending time with each other."
James, 47, is the businessman son of an Australian media mogul. He has three children with ex-wife Erica Baxter. Meanwhile Mariah has two children - Monroe and Moroccan - with ex Nick Cannon.
For exclusive competitions and amazing prizes visit Reveal's Facebook page NOW!