While Dove Cameron and Thomas Doherty are now super open about being in love, their relationship was kept on the down low when they first got together on set of Descendants 2. While they started out trying to keep things quiet, their co-star Sofia Carson totally knew what was going on between the love birds. In a recent interview, the "Back to Beautiful" singer dished juicy behind-the-scenes details about the the couple's chemistry on set.

"Absolutely, from the very beginning, there was definitely chemistry there. And she’s very happy, so we’re all happy she’s happy," the Disney Channel star dished.

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RELATED: Dove Cameron Confirms She Is In Love With Her New Boyfriend Thomas Doherty

"It was secret to everyone else but me. For a while, it was a secret that she wanted to keep. It was also kind of obvious. She was trying to keep it a secret, but it was very obvious as well," Sofia revealed.

Aww! Besties truly have a way of just knowing.

“As long as she’s happy, I’m happy is what I always say,” Sofia said, confirming that she totally approves of Dove and Thomas.

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RELATED: Sofia Carson Talks About How Disney Channel Changed Her Life

As for Sofia's love life? She prefers to keep things on the down low.

“It’s been okay so far,” she revealed. “I go out on dates and I date. I think the key is, for me, keep privacy. I think it’s easier than you would think to keep things private."

If she's hanging out with a guy she likes, you most likely won't catch her posting it on Instagram.

"The second you post a photo, then you’re obviously announcing to the world," she said. “But I think privacy is really important to me. So my relationships, my friendships, I like to keep very private, just so it’s just for me.”

Sofia also spilled about the movie viewing parties that Kenny would throw for the cast.

"We would all get together at like one of the hotel rooms in the hotel, and we'd watch a movie that was some way inspired or would inspire us for Descendants. We would all get together and have candy and popcorn and just all be family, and that was always really awesome," Sofia dished.

Hmm, we we bet there was some flirting happening between Dove and Thomas on those occasions.

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While the D2 cast recently watched the completed movie together, fans sadly have to wait until summer to see it. In the meantime, the squad will been spending a lot of time together to promote the upcoming film.

"We started press for the film recently, so we have been together quite often. We saw the movie for the first time last week, which was such an amazing experience. It's always weird to watch yourself. The first time I kind of have to absorb it and then watch it one more time to like really understand what was going on. But it's just so special when we get to be together."

How do they stay in touch when they're not together, you ask? An epic group text.

"There's a group text! If we ever find a really bad photo of the four of us like we'll have it in that group – like 'we all look really good here.' Or just like funny things that happen to us. We always keep in touch through there," she explained.

Oh, how we'd love to take a little scroll through that group message. Now excuse us while we mentally prepare for this epic premiere!

RELATED: Dove Cameron & Thomas Doherty Are Caught Getting Super Cozy

This post was written by Emily Brozyna. For more news about music, movies, and more, check out our sister site, M magazine.

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