Josh Duhamel was surprised that his wife Fergie agreed to marry "Mr. Straight White Boy".

The actor began dating the Black Eyed Peas star in 2004, with the pair later marrying in 2009. Josh never expected Fergie to fall for him, fearing he was too straight-laced for her.

"To be honest, I'm sometimes surprised she picked Mr. Straight White Boy', because she's very rock n' roll, so I'd have thought she would be with someone who is a little more out there," he told the January issue of UK magazine Glamour. "Then again, maybe that's exactly why she chose me.

"I don't look to publicise our relationship, because I know what we have, and the rest of the world don't need to know. That said, I don't mind talking about her, because I'm proud of her and I love her."

Josh admits spending long periods of time apart can be tough.

The 39-year-old travels all over the world making movies, while Fergie is also often away from home with music commitments.

Josh has revealed that the pair relies on modern technology to keep the spark alive in their marriage.

"Well, there's Skype She makes sure the lighting is pretty perfect," he explained. "You've heard the term, Absence makes the heart grow fonder,' right? Well, hers is Absence makes the c**k grow harder.'"

Black Eyed Peas recently announced they are taking a break to focus on solo projects.

This decision has sparked rumours that 36-year-old Fergie is keen to start a family.

Josh has revealed the couple would like to have a baby "pretty soon" and they are looking forward to being parents.

"I've always loved kids, so I can't wait to have them myself. I'm excited about it. I think we'll have two that's been the number," he smiled.