The pair were rumoured to have begun dating earlier this year after meeting on the set of their upcoming movie Dark Tide during the summer.
They appeared to confirm the romance speculation when they walked the red carpet together holding hands at the Carousel Of Hope Ball in Beverly Hills over the weekend.
Oscar-winner Berry and Martinez first sparked reports of a relationship when they were spotted together in Martinez's hometown of Paris in September.
Berry separated from model Gabriel Aubry - the father of her young daughter Nahla - in April, while Martinez previously dated Kylie Minogue.
