This Is Us is back on television delivering the drama, but it turns out the real action is behind the scenes. Through the years, the cast, from Mandy Moore and Chrissy Metz to Sterling K. Brown, Justin Hartley and Milo Ventimiglia, have seen their fair share of wild ups and downs.

Moore may boast a squeaky clean image, but she’s gone through a bitter divorce and recently got slammed by her ex, who likened her to “the spiritual equivalent of soggy piece of cardboard.”

Metz endured a hellish upbringing, but she’s created chaos of her own with her alleged diva antics on and off the set.

Meanwhile, Milo infamously romanced a much younger actress, while Brown failed to quickly defend his co-star on a movie and Hartley ran into financial issues before he found fame.

For more on these shocking secrets and scandals and much more, scroll through Breaking Celebrity News's gallery!

After tying the knot with singer-songwriter Ryan Adams in 2009, Moore claimed she lost herself in her troubled relationship and began to doubt her path. “I was so confused and spread thin and stressed,” she has said. “It was a few years of just unhappiness. I get emotional when I think about it."

Moore suffered a shock when Adams went on a Twitter rant against her in October 2018. “When someone told me we got married I thought they were joking,” he tweeted. “Then I realized how many painkillers I was taking. Honestly, there weren’t enough to numb the shock.” In another slam directed at his ex, he blasted: “Sometimes you get stuck to the spiritual equivalent of a soggy piece of cardboard. But it rains on net-a-porter every day when you’re trapped inside yourself. Take the money. I’ll take my pride, any day.”

During an interview in 2016, Moore confirmed a years-long secret about her mother — and her two brothers! “I’ve never really talked about this,” she said, “but my parents are divorced. My mother left my father for a woman. And both of my two brothers are gay.” Despite her unconventional family, however, the star noted she grew up in a happy home, noting, “My parents loved each other; they did an incredible job raising all of us.”

Moore once had a rocky relationship with her This Is Us costar, Ventimiglia. “The feud started because Milo was basically handed his role by producers while Mandy had to test and audition and fight for hers,” a source claimed to Breaking Celebrity News. “Milo had a much easier road, and Mandy resented it.” However, after two full seasons, the TV couple finally called a truce after Metz helped smooth things over.