Mila Kunis and Ashton Kutcher have known each other for nearly 20 years... But they didn't always get along!
The pair met on the set of That 70s Show when Mila was only 14 and Ashton was 20.
Despite now being married with a daughter, Mila recently revealed to Glamour the couple wasn't always the best of friends.
"We went through a period where I thought he was crazy," she said.
"At the height of his career, I was like, 'Ugh, I don’t like you. I don’t even know you anymore. You think you’re such hot sh-t.'"
She said the couple even went through "friendship break-ups".
"We’d get back together [after the friendship break-ups] and be like, 'Oh, sorry. I didn’t mean to overreact.' 'That’s OK.' All the time," Mila confessed.
"It truly is being married to your best friend. That’s a cliché; it’s cheesy. But it’s true."
However, after acting as a couple on-screen for years, Mila revealed they can't get away with 'acting' in their private lives.
"We can’t bullsh-t each other. I literally can’t lie to him, she told Glamour.
"He can call me out on everything, and I can do the same, because there’s nothing about the other person’s face that we don’t know. We know when they’re acting, thus we know when they’re lying. Sometimes he’ll look at me, be like, 'Really?' And I’m like, 'F--k.'"
Ashton, 38, and Mila, 32, began dating in 2012 and welcomed their first child - a daughter, Wyatt Isabelle - in 2014.
They married in July last year, and recently revealed they are expecting their second child.