Cameron Diaz "really wants" a baby.

A source told E!: "She told Benji she really wants a baby. And he said, 'Well, marry me.' He's old-fashioned ... Marriage was important to him."

The 35-year-old rocker - who previously dated Paris Hilton and Sophie Monk - also recently hinted he is keen to start a family by admitting kids are "what every man wants, whether they admit it or not".

Last year, Cameron - who has dated several hunks in the past including Jared Leto, Justin Timberlake and Matt Dillon - admitted when she decides she wants kids she will get them whether that means adopting or having them with a partner.

She said: "If I wanted kids, at any point in life, I would have them. But I'm certain that if at any point I wanted a child, that child would find its way into my life, whether through adoption, or through being in a relationship with somebody who has a child.

"I can't see the future, but one thing I do know is that I'm not childless. I have a ton of children in my life. I can have a kid any second, if I want. All my friends would be like, 'Sure, come and get them.' "