On this week’s episode ofThis Is Us, the Big Three have returned from their retreat at thePearson family cabinto resume their daily lives and fix what was going wrong in their respective realities.

Randall (Sterling K. Brown) took the first step in addressinghis mental healthwhen he met with his therapist Dr. Leigh (Pamela Adlon) at her office, where the anxious Pearson sibling had a breakdown and subsequent breakthrough, thanks to wife Beth (Susan Kelechi Watson). Audiences also learned that it was his father Jack (Milo Ventimiglia) who introduced him to running as a way to deal with anxiety.

Meanwhile, in Los Angeles, Kevin (Justin Hartley) and Rebecca (Mandy Moore) embarked on a mother-son adventure to Joni Mitchell’s old house after she told him about her new “Carpe Diem Rebecca” mentality upon awaiting for her MRI results for her mild cognitive impairment, which they later find out could be an early sign of Alzheimer’s disease. The visit to the music icon’s home was extra special because Rebecca and Jack had failed to find the house during their road trip to L.A.

The Big Three appear to be heading in positive directions, but longtimeThis Is Usviewers know that a twisty cliffhanger is usually just around the corner. Metz and Sullivan tell PEOPLE what’s to come in their characters’ relationship, with the actress also teasing why audiences haven’t seen the last of Kevin and Kate’s BFF Madison (Caitlin Thompson).

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“Every relationship, every marriage has ebbs and flows. We’re human, we’re having a human experience. We’re imperfect. He’s doing the best he can, as Kate is. He’s trying to make it right but there are twists and turns. What would a relationship be without them?” Metz echoes.

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And just when Kate had a full plate already with her marriage, Rebecca’s ailing health and raising son Jack, her relationship with Madison was affected after Kevin and Madison slept together.

Although a brunch date seemed to smooth over Kate’s annoyance, it could just be short-term.

“We’re going to see more of what that means to Kate and how that might affect their friendship or relationship with Kevin. Of course, nothing is in vain on this show and there’s a reason why it’s unfolding. We’re going to be able to see that,” Metz shares, adding that she’s “excited” for fans to learn more.

“As humans we are imperfect and sometimes we make rash decisions for good or for worst. I’m excited about it, actually. It’s life on life’s terms, which means it’s not perfect. You celebrate the good and handle the not-so-great,” she says.

This Is Usairs Tuesdays (at 9 p.m.) on NBC.

source: people.com