Sarah Shahi Reveals Which Sex/Life Scene Created 'a Lot of Giggles' Between Her and Costar Adam Demos

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This post contains spoilers from the second season of Sex/Life.

When it comes to the Sex/Life season 2 finale, there's a lot to discuss.

The sixth episode concluded with Brad Simon (Adam Demos) and Billie (Sarah Shahi) declaring their love for each other at Sasha Snow's (Margaret Odette) wedding after ending their respective relationships with Gigi (Wallis Day) and Majid (Darius Homayoun).

When asked how she and her costar/boyfriend Demos prepared for the grand declaration, Shahi tells PEOPLE that "we met as actors, and so we have a very good way of putting the relationship aside and then wearing the actor hat."

"It definitely creates a lot of giggles between the two of us having to film that wedding scene," she admits. "But he still is one of my favorite scene partners because everything becomes very easy with him — whether or not it's a scene about loving one another or hating one another — all I have to do is kind of look at him and my work is done. I'm pretty lucky in that aspect."

Netflix Sex/Life

RELATED: Sarah Shahi on Her 'Very Personal Journey' Filming Sex/Life: 'Billie and I Were Oddly Similar'

In the final scene of season 2, the pair tied the knot and Billie revealed to Brad at the altar that she is pregnant after experiencing a miscarriage, which was shown in flashbacks during season 1.

Shahi admits the pregnancy reveal was "a surprise" to her.

"She's able to have the family with Brad, she's able to have that wild, passionate side of her come alive as well with him," she said of finding out about the pregnancy. "They now have this blended family. So I was happy for her."

RELATED: Adam Demos Says His Mother Was 'Covering Her Eyes' While Watching His Steamy Sex/Life Scenes

However, Shahi can't promise smooth sailing ahead for the couple as she likens Billie's experience to her own personal journey.

"As somebody who is divorced… there's all these challenges, even for the happiest of couples," she says. "So I can guarantee you that there's going to be tough times ahead for them."

Courtesy of Netflix

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Shahi also opened up about reuniting with Demos for the second season of the hit Netflix series despite having few scenes together.

"We were pretty happy to come back and both of us love our characters so much," she shares. "I would've wanted to be with him more, only because I think just because we're in a relationship together and when you're working, the hours are pretty grueling, and so you really don't see each other as much if you're not there at the same time."

She adds, "I would've wanted to work with him more, so we didn't really get to work with each other this season that much."

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Sex/Life season 2 is streaming now on Netflix.