The How to Lose a Guy in 10 Days actress, 35, and Muse rocker, 36, started dating in 2010, and got engaged in April 2011. Three months after their engagement news, the couple welcomed a son Bingham Hawn Bellamy (now age 3). Hudson also shares a 10-year-old son named Ryder with her ex-husband Chris Robinson, whom she split from in November 2006.
Hudson and Bellamy last hit the red carpet together at Goldie Hawn's Love In For Kids event in L.A., on Nov. 21. Hough also attended the same event that evening.
Sources tell Us that Hudson and Hough were together this past weekend at the Nice Guy Restaurant in L.A. One eyewitness says the stars ate dinner, drank, and stayed past closing.
Even before the two were linked together, Hudson gushed about spending time with Hough in a 2013 interview with Shape magazine. "My heart is really in contemporary jazz, but lately I’ve been ballroom dancing with Derek Hough," she told the mag of the seasoned DWTS pro. "It’s been a real blast." See more photos of Kate and Derek.
Hudson previously voiced how she didn't mind her prolonged engagement to Bellamy. "No, I'm planning nothing right now. I'm so busy, we've been so busy and it's been great," Hudson told Kelly Ripa and Michael Strahan this past January.
"I come from an unconventional family -- they're not married, my parents aren't married," she continued of her mom Goldie Hawn and her longtime partner Kurt Russell, whom she affectionately refers to as dad. (Hawn split from Hudson's biological father, Bill Hudson, in 1980.)
"So there's a part of me that goes, if I'm going to do it, I'm going to do it right," she continued. "And I'm going to take the time to really plan it right . . . And it's a lot. Planning a wedding is a lot! I mean, I did a movie about planning a wedding and that was a lot, let alone actually planning a wedding! So, no. Not anytime soon, no."
X17 was first to report Hudson's split.