Paris HiltonParis HiltonParis Hilton has had a secret shared.

But will she be cross or surprised?

After all it was her man, Benji Madden, doing all the gum-flapping... 

He popped along to Ryan Seacrest's radio show with his brother Joel.

But while it might have been expected that Joel - father of Nicole Richie's five-month-old baby daughter Harlow -  would have been chatting babies, who'd have thunk that Benji would have little 'uns on his mind?

He said about his relationship with Paris: "I'm so beyond happy.

"Of course, when you're that happy, you think about everything."Paris Hilton and Benji Madden 03.08Paris and Benji Madden

When asked if he worries about having kids, Benji replied: "Not at all. I mean, she's my best friend."

This comment prompted Joel to interject sarcastically, "I can see it tomorrow, 'Benji's Ready for Fatherhood.'"

Not to be put off, however, Benji continued: "I've never been so happy. Nothing worries me in life anymore. When you find that best friend, that love, all your worries kind of go away.

"Your work gets better and everything you do, you have someone supporting you, and she's that for me. I've never been supported so much.

"I'm a lucky guy. Her family is so nice to me. And now the four of us, we all... it's great, you know."

Wow... gushing much Benji?