EXCLUSIVE: 'Scorpion' Stars on Walter and Paige's Big Romantic Decision: 'It's About Time'

Katharine McPhee and Elyes Gabel talk to ET about Monday's monumental episode.

Warning: Spoiler alert! Do not proceed if you have not watched Monday’s episode of Scorpion.

Weddings bring out the romantic in all of us -- and that sure was the case on Scorpion.

On Monday’s episode, titled “Something Burrowed, Something Blew,” Toby (Eddie Kaye Thomas) and Happy (Jadyn Wong) tied the knot in the most romantic of settings: a makeshift wedding venue in the middle of a parking lot. But it wasn’t just Toby and Happy’s nuptials that were worthy of celebration.

After nearly three seasons of longing looks, many almosts and a fleeting kiss, Walter (Elyes Gabel) and Paige (Katharine McPhee) took the plunge, putting everything on the line by saying those coveted three words to each other and making their relationship official with a sexy make-out session in the closet.

“The chronology of their relationship was well-thought out and well-planned,” McPhee tells ET of Walter and Paige’s blossoming romance. “It makes sense to me that the most romantic setting to profess your love to somebody is pretty much at another wedding, where it’s all about love and commitment and relationships."

RELATED: Elyes Gabel and Katharine McPhee on Walter and Paige's Romantic 'Scorpion' Fantasy

“It’s about time, but it’s also the perfect time,” the 33-year-old actress adds.

As Gabel explains it, having Walter and Paige confronting their feelings for each other at Toby and Happy’s wedding only compounded the significance in which they felt they wanted their relationship to go.

“There’s something very brilliant about writing somebody else’s story from the perspective of a person’s wedding because you have that view into something that they want, something that they have very similar feelings about but they haven’t grasped it yet,” Gabel tells ET. “I think that’s what creates hope ... for Walter.”

Gabel noted that “fear” was the ultimate catalyst that pushed Walter to profess his love for Paige.

“Fear is the catalyst and also the thing that stopped him from saying it for so long -- the fear of losing her because for all he knows he’s going to push her away, he’s pushed her away physically where he hasn’t seen her in a few weeks. He realized that the thing he’s more worried about is losing her again,” the 33-year-old actor says. “It’s that thing of when you look back on your life, you’ll be more disappointed by the things that you didn’t do than by the things that you did.”

RELATED: 'Scorpion' Crew Compete on 'The Price Is Right' and It's Adorably Hilarious

Just because the Scorpion duo is now an official couple, though, that doesn’t mean that complications won’t still arise.

“There’s that level of ambiguity,” McPhee says when asked about what Walter and Paige dating looks like. “Paige is not sure because she says quite a few times in the last few episodes, ‘Wow, this is going to be a little harder than I thought.’ She wants him to be less eager and let things fall as they will and so I think she’s taken aback a little bit by the fact that he’s suddenly trying to really be present for her in terms of being a partner.”

“It will be interesting to see when we pick up in season four what that’s going to look like,” she notes. “It would be fun to play the giddy, child-like, completely in love with each other and then see that progress into something a little bit more challenging. It’s one thing working together but having a working relationship and a romantic relationship, all those things can add interesting dynamics to the show. They’re going to have lots of challenges, I have no doubt.”

As for whether Walter and Paige may one day head down the aisle themselves, McPhee and Gabel were adorably coy about the prospect.

RELATED: Walter Goes on Promising First Date on 'Scorpion,' But It Gets Awkward Fast

“You always like the idea of dysfunction within a relationship rather than complete harmony, because who wants to see people [on TV] going, ‘Hey, there’s your milk, darling. I love you!’” Gabel says. “You want to see what replicates or mirrors what happens in the American universal family.”

“If that were to happen, that would probably have to be the end of Scorpion as we know it. I don’t know that that would be something that they would play into a future season. To get to that, they have a much longer journey -- that’s just my own take on it,” McPhee says.

airs Mondays at 10 p.m. ET/PT on CBS.