Moriah Plath is introducing her boyfriend Max to two very important people in her life.

In a PEOPLE exclusive sneak peek at Tuesday’s episode ofWelcome to Plathville, Moriah’s eldest brotherEthan Plath and his wife Oliviafinally meet Max for the first time.

“Moriah seems to be very happy with Max and that’s a good thing,” Ethan, 22, says in a confessional.

During the group’s dinner together, Ethan and Olivia — who are working through struggles in their marriage — are also reminded of what their relationship once was and could be again.

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Ethan and Olivia Plath

Seeing the loving interaction between Moriah and Max, who are not shy about showing affection in front of the Plath family, takes Olivia back to when she and Ethan were newlyweds.

“Being around Max and Moriah, and they’re like all lovey-dovey and comfortable, it’s a little bit weird for me just ‘cause it reminds me a little bit more of when Ethan and I were first married,” says Olivia, “and it was really sweet and fun.”

During the meal, Max shares that he didn’t think Ethan and Olivia wanted to meet him after a few previously-attempted get-togethers didn’t happen — which Olivia seemingly confirms.

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Ethan and Olivia Plath

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Welcome to Plathville

As fans will recall from theseason 2 finale, Ethan and Olivia chose to have no contact with his parents, Kim and Barry Plath — a decision that meant they are also unable to see his youngest siblings who still live at home.

(Last season, viewers saw the Georgia-based Plath family splinter into three households: Kim, 48, and Barry, 53, with their youngest children: Lydia, 17, Isaac, 15, Amber, 12, Cassia, 11, and Mercy, 8; Moriah, 18, and Micah, 20; and Ethan and Olivia. There’s also daughter Hosanna, 21, a violinist who tours full-time with her pianist husband Timothy Nobel.)

Ethan and Olivia Plath

But maintaining distance from her in-laws, with whom she and Ethan have a strained relationship, is something that Olivia wants to continue.

“It just made me really scared of like, ‘What if I can’t actually have a boundary? What if they’re gonna come back in my life in some way?’ So I took a big step back and I was like, ‘I gotta figure this out ‘cause I’m drowning. Like, I just didn’t know how to put boundaries down,” explains Olivia, whocredits therapyfor being helpful.

She then tells Max, “I’m really sorry you felt that way.”

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Ethan and Olivia Plath

Hearing Olivia explain her perspective is something Moriah is understanding of.

“It’s understandable. If Olivia isn’t accepted into the family and Max is, that would probably be a reason that I would also be like, ‘Wait a second,'” Moriah says in a confessional about her sister-in-law, who she notes “is in a difficult situation.”

Welcome to Plathvilleairs Tuesdays (10 p.m. ET) on TLC.

source: people.com