Duhamel’s comments were filled with congratulatory wishes from his fellow famous friends, but it was the supportive message from his ex-wife Fergie that stood out. “Congrats!!!💚💚💚💚💚💚,” the "Big Girls Don’t Cry" singer wrote next to the photo.
Fergie, 46, and Duhamel, 49, - - who share 8-year-old son Axl - - tied the knot in 2009. The famous pair called it quits in 2017 and finalized their divorce in 2019.
In 2018, the songstress opened up about co-parenting with her ex. "We split it up really balanced," Fergie told ET at the time. "We're all love and we love each other. We're all cool and just a family. I have a good co-parenting partner, so we work it out."
"I want to have more kids in the next few years. So it's more about finding someone young enough to have kids. It's not as if I'm out there trying to just f**k anything," he added. "That's really not who I am. I'm trying to find a girl that I can be with and have a family with."
Duhamel and Mari have not yet shared any details about their wedding plans.