Olivia Kaiser and Theo Campbell are gearing up for their new exciting mission: parenthood.
The duo, who competed on season 40 of MTV’s The Challenge: Battle of the Erasin 2024, announced they’re expecting their first baby together.
“Our sweetest little secret,”they captioned their joint July 7 Instagram post, which features a sweet photo of them holding Olivia’s ultrasound in a field. “We’ve been enjoying some time off the grid — embracing the quiet, the love, and the magic of what’s to come. Now it’s time to let you in on the journey. Our little one is arriving soon.”
Theo and the Love Island USA star, who started dating last May after meeting on the competition series, also shared their “little adventure” will arrive sometime in December 2025. And true to their excitement, they already have an all-white onesie prepared for their bundle of joy.
That wasn’t the end of their touching announcement, as Theo—dad to four-year-old son Aries—gushed over the milestone in his Instagram Stories. He further posted a tweet Olivia wrote on Twitter (formerly X) in December 2023, where she noted that “babies are literally the biggest blessings” and she can’t wait to “become the best version of myself to be the best mom ever.”
As for his sweet message alongside her predictions?
“I remember seeing this before we met,” the Love Island UK alum wrote. “Congrats, baby girl. You’re gonna be the best mum (mom) ever.”
And Theo isn’t her only cheerleader, as theirChallenge costars also surrounded them with love in the comments section. Michele Fitzgerald—who formed a tight knit alliance with Olivia on the show’s latest season—excitedly wrote, “OMGGG IM AN AUNTIEEEEEEEE,” to which Olivia responded, “Love you.”
Meanwhile, Nurys Mateo joked that she had a feeling this announcement was on the rise.
“I literally JUST said I think you’re pregnant the other day!!” she wrote. “Intuition is wild. Congratulations you two.”
