J.B. Smoove — who plays Mr. Dell in the new Spider-Man movies, including the forthcoming Spider-Man: No Way Home — recently told Entertainment Tonight that the two returning stars are the "most adorable" pair.
"I love those two. I love them so much," Smoove, 55, told the outlet, calling them "the most adorable couple ever in the history of adorableness."
Smoove, who is married to Shahidah Omar, also revealed the relationship advice he gave Holland and Zendaya, both 25: "Have time for love but have time for laughter. Laughter. Smiles. Stress-free lifestyle, you know. Find out about each other and find some way to keep watering that seed and keep growing and growing."
A source previously told PEOPLE in July 2017 that Zendaya and Holland were romantically involved.
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Amy Sussman/Getty J.B. Smoove and Shahidah Omar
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"One of the downsides of our fame is that privacy isn't really in our control anymore, and a moment that you think is between two people that love each other very much is now a moment that is shared with the entire world," Holland said.
He added, "I've always been really adamant to keep my private life private, because I share so much of my life with the world anyway. We sort of felt robbed of our privacy. I don't think it's about not being ready. It's just that we didn't want to."
Holland praised Zendaya, telling GQ she has been "instrumental" in his life over the past few years. The Euphoria actress also told the magazine that having others get a glimpse at her personal life is both "confusing and invasive."
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"The equal sentiment [we both share] is just that when you really love and care about somebody, some moments or things, you wish were your own," Zendaya explained. "I think loving someone is a sacred thing and a special thing and something that you want to deal with and go through and experience and enjoy amongst the two people that love each other."
Hoping to keep their private lives under wraps, Holland added that the pair will have a discussion about revealing details of their relationship when the time is right.
"This isn't my story. It's our story. And we'll talk about what it is when we're ready to talk about it together," he said.
Zendaya and Holland's third Spider-Man movie together, No Way Home, opens in theaters Dec. 17.