The tide has turned for Jason Momoa and Eiza González. After a brief romance, the Aquaman star and the Baby Driver actress have broken up, a source close to Momoa confirms to E! News. "They were together but it was never serious," the source tells. "They are both focused on their careers." The insider says they weren't often in the same cities at the same time, noting, "He has a full slate with a ton of travel and it didn't make sense logistically." Momoa and González sparked romance rumours in May, about a month after he was spotted at the premiere of her movie Ambulance in April. "They have been dating casually for a couple of months," a separate source, close to González, revealed last month. "She really likes him. She is very focused on her career right now. But everyone loves him, and he is a fun guy to be around." News of the pair's relationship came about four months after Momoa announced his split from Lisa Bonet. They had been married for four years and together for almost two decades before the breakup.