Eva Mendes has called marriage an "unnecessary" tradition.

Although the 'Last Night' actress has been dating Peruvian filmmaker George Augusto for almost a decade she has never felt the need to walk down the aisle, and now says she thinks people only partake in the "very old tradition" because it is expected of them.

She told HollywoodLife.com: "I just don't think marriage is necessary, as necessary as society makes it.

"And I don't have a negative point of view on it. I just think it's a very old tradition and if you look back to what marriage symbolises in the first place ... it has nothing to do with why we get married today."

The 37-year-old beauty has spoken of her indifference to the institution before, calling it "boring", and also revealed she feels no pressure to become a mother.

She said: "I don't know if I want children, but the idea of marriage sounds very boring to me. I have to be honest."

Eva also insisted she's a romantic and enjoys going to her friends' weddings but gets a thrill from refusing to become a bride herself because it makes her feel rebellious.

She explained: "I am extremely romantic but I think there is that little rebel inside me that is anti-establishment. It's just one more fun thing I can rebel against."