The 35-year-old actor could not help but gush about the "2 Fast 2 Furious" actress, with whom he has 14-month-old daughter Esmeralda, reported Female First.
"I know that I'm with the person I'm supposed to be with," Gosling said.
When asked about the qualities he looks for in a woman, he said, "That she's Eva Mendes. There's nothing else I'm looking for."
Gosling added he was looking forward to his first proper Christmas with his little girl.
"This will be our first Christmas where [Esmeralda is] sort of taking it all in, so that's exciting.