Los Angeles, California - Zendaya's former co-star has revealed some surprising new details about the beginnings of her romance with her now-fiancé, Tom Holland!

Tammy Townsend, who starred alongside Zendaya on Disney's KC Undercover, told People on Tuesday that the 28-year-old Emmy winner initially kept her relationship with Tom "under wraps".

While Tom and Zendaya didn't go public with their romance until 2021, the comments confirm that it really dates back to around 2016, when they first began co-starring in Marvel's Spider-Man movies.

"I knew it was serious," Tammy said. "Tom would just come through and see what we were doing."

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The show ran between 2015 and 2018, and Tammy added that the whole cast "definitely knew that there was a really strong connection" between the future fiancés.

Trinitee Stokes, who starred as Zendaya's younger sister, also shared that Tom once spent several weeks on the KC Undercover set "just hanging around."

"I love Tom, and I honestly have been so happy to watch this progression in their relationship because he's such a great guy," the 18-year-old added.

Fans have long suspected that Tom and Zendaya's romance began well before they confirmed it, but the two firmly dismissed the dating rumors when they sprang up in 2017 – seemingly the same time the Uncharted actor was hanging around the Disney set!

The couple's romance was officially confirmed when paparazzi caught them sharing a kiss, and Tom sealed the deal with a swoon-worthy Instagram post honoring Zendaya's 25th birthday.

After Zendaya debuted a new diamond ring at the 2025 Golden Globes earlier this month, it was revealed that the two had gotten engaged over the holidays.