The INSIDER Summary:

• Josh Duhamel stars in the new "Transformers" movie, "Transformers: The Last Knight."
• He has been married to former "Black Eyed Peas" singer Fergie since 2009.
• The two have a son named Axl.
• Duhamel tells INSIDER the two make their relationship work by keeping their professional lives separate and their private lives private.

Josh Duhamel is back in theaters this month in the new "Transformers" movie.

While Duhamel plays a lieutenant colonel onscreen in the "Transformers" universe, offscreen he's married to singer Fergie. The two met back in 2004 on his show "Las Vegas" after Duhamel coordinated an appearance by the Black Eyed Peas.

"I wanted to meet her so I talked to the producers to get the Black Eyed Peas on the show," Duhamel told INSIDER recently. 

The two have been together since, marrying in 2009, and having son Axl Jack in 2013. Duhamel says one thing that helps make it work between the two is having their own passions and keeping their work lives separate from their personal ones.

"We just have a lot of fun together and we really like each other and we've got that little boy that we just adore," said Duhamel. "She does her thing professionally and I do my thing professionally and what we have at home is our own little private life."

While you'll see a few snaps of the two together, you won't see too much of Fergie and Duhamel on each other's Instagrams. Sometimes the two will talk to each other on the platform through their son, Axl. It’s absolutely adorable.

Here's Fergie giving Duhamel some love for his upcoming "Transformers" movie. 

And here are Duhamel and Axl singing Happy Birthday to Fergie.

Duhamel explained why its easier to keep their careers separate. 

"I think we like to kind of keep it that way," Duhamel told INSIDER. "I don't get involved with her stuff and she doesn't get involved with mine and I think that helps because once you start intermixing profession and getting ideas and ... I tried that for a little bit. I tried saying, 'I think this would be great,' and she said, 'Listen. I've got plenty of people telling me about how my opinions are supposed to be. You just be my husband.' And I'm like, 'Okay!' We just keep our professional stuff private or separate and we keep our private lives private."

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