Who is the mystery man in Kathryn Bernardo's latest TikTok video?

If you're wondering how to soft launch someone on social media, take it from Kathryn Bernardo.

On TikTok, the "Hello, Love, Again" actress hopped on the Sabrina Carpenter craze and lip-synced to her hit song "Bed Chem."

Towards the end of the video, Kathryn pulled someone's arm and showed it to the camera without revealing who the person was.

She simply captioned her post with, "Hmmm…"

As of writing, the video has over seven million views and more than one million reactions.

Kathryn and Alden Richards are set to reprise their roles as Joy and Ethan in "Hello, Love, Again," a sequel to the 2019 blockbuster hit, "Hello, Love, Goodbye."

In the official trailer of the upcoming film, Korean-American actor Kevin Kreider was introduced as part of the cast.

He calls Joy "Marie" at the airport.

The film teaser released in September showed Joy introducing herself as "Marie" to Ethan when ordering a coffee.

Directed by Cathy Garcia-Sampana, "Hello Love Again" continues the story five years after Joy left Hong Kong for Canada.

"Hello, Love, Again" will be in cinemas on November 13. Tickets are now on sale.

@bernardokath

Hmmm.. ????

? Bed Chem - Sabrina Carpenter

— Hermes Joy Tunac/LA, GMA Integrated News