Josh Duhamel, 53, reveals moment he knew he was 'too old' for his wife

Shotgun Wedding star Josh Duhamel has reflected on the harsh realisation that he's 'too old' for wife Audra Mari.

Following his divorce from Black Eyed Peas singer Stacy Ann Ferguson (or 'Fergie') in 2019, Duhamel found love with the former Miss World America and now shares a son and a daughter with her.

Appearing on a recent episode of The HoneyDew with Ryan Sickler podcast, the 53-year-old got chatting about their 21-year age gap, which mirrors the difference between Duhamel and his younger sister Kassidy.

"Kassidy came along... and I was playing football at Minot State University. Go Beavers! Warming up on the sideline,” he began.

"And I remember looking up at the stands, and I see my mum and [she] has this bump. And I'm like, 'What the— Is my mum pregnant?'... I was 21 years old and she's having another baby. And I was like, 'Oh my God, you gotta be kidding me!' So, now we love it."

Fergie and Josh Duhamel were married for 10 years until 2019 (JB Lacroix/WireImage)

Further along, Duhamel explained how there's a snapshot of him from this period in his life where he's cradling 'little bitty infant' Kassidy.

"I looked at the photo and I looked at my wife, and I said, 'You know, you and Kassidy are exactly the same age.' Is that a highlight or a lowlight? I'm not sure."

He then apparently told his wife: 'Ooof, I am officially too old for you!'

"They're literally like months apart in age. I never looked at it like that until I saw that photo. I was like, 'Wait a second.'"

This comes after Mari herself told Graham Bensinger that their age gap only crept into conversation when they were discussing the possibility of starting their own family.

"I will say, the age thing doesn't normally come into conversation, but it definitely does when speaking of having babies," she said.

"I really do believe he would have five more kids if he was even 40 right now. It's probably true. We'll definitely have a few though. Hopefully, God willing."

Fergie was one of the main creative forces behind The Black Eyed Peas (David Becker/Getty Images)

As for his previous high-profile marriage, Duhamel spoke about the realities of hooking up with Fergie earlier this year whilst stopping by The Megyn Kelly Show.

"It was a huge shift [in my life] because she was a massive star at the time and so it was a big adjustment for me, if I'm being honest," the Transformers actor recalled.

"But, you know, Fergie is a very normal person, at the end of the day. A good mum. We have a great relationship. She and my wife actually get along great."

Duhamel also insinuated that Fergie's megastardom 'probably' dented his own ego, in that he felt in the shadows 'a lot of the time'.