“They’re sleeping well, but sometimes I think those two have a little side meeting,” he says in the latest issue of PEOPLE. “They’ll decide, ‘Okay, today you’re going to be bad and then when you fall asleep, I’m going to be bad.’ They’re in cahoots! Twins are double the work, but definitely double the joy!”
In 2015, the couple hired a surrogate, who became pregnant with twins, but she suffered a miscarriage during her first trimester. A year later, they tried again, and that same surrogate became pregnant for a second time, but miscarried again.
RELATED VIDEO: Bethenny Frankel Reveals How Her New Show ‘Bethenny & Fredrik’ Differs From ‘Real Housewives of New York’
After trying one final time with a new doctor and new surrogate, they got the news they were expecting. (Fredrik Jr. is Kaplan’s biological son and Milla is Eklund’s biological daughter.)
- For more from Fredrik Eklund, pick up the latest issue of PEOPLE, on newsstands Friday
“I read all the baby books, started changing diapers on dolls, I even went to Twiniversity. It’s like going to college to learn about having twins,” says Eklund.
But still nothing truly prepared Eklund for the joy of becoming a first-time father.
“This was a long time in the making. So many years and so many difficulties getting here,” he says. “It’s more than I could have ever wanted.”
Eklund stars in the new home renovation series Bethenny and Fredrik, which premieres Feb. 6 at 10 p.m. ET on Bravo.