Despite her engagement to longtime partner Danny Fujikawa, Hudson, 42, was spotted flirting up a storm with the Jack Ryan star while attending W Magazine's Best Performances soirée back on March 24.
According to a report from Life and Style, an onlooker at the event noticed the Something Borrowed actress living it up at Gigi's in Hollywood, while Fujikawa, 35, was nowhere to be found.
"[Hudson] and [Pine] spent an hour laughing, talking and joking off by themselves," the insider at the event squealed to the outlet. "You could tell he was mesmerized by her."
"Kate was twirling her around her finger in that flirtatious kind of way the entire time they were together," the eyewitness continued. "If that were my fiancée, I wouldn't have been impressed."
While Pine isn't currently tied down to a relationship, the same can't be said for Hudson, who is supposed to be getting ready to walk down the aisle soon.
In September 2021, the blonde beauty announced the proposal by sharing a photo with Fujikawa to show off the new bling on her left hand.
"Let's go!" she captioned the adorable pic, alongside a series of emojis: "👰♀️💒🤵🏻♂️."
The future spouses officially started dating in 2016, although they had known each other for nearly a decade prior. In 2018, they welcomed their daughter, Rani Rose, making Hudson a mother-of-three.