The latter threw a divorce party when she and Travis Barker split up - and over the weekend, Hudson got jiggy with it at her home in L.A.'s Pacific Palisades in an attempt to move on from Owen Wilson.
"They have definitely cooled off," a source close to the actress tells Us magazine of Hudson and Wilson's summer fling. "She adores him and wishes it had worked out. But it didn't."
Hudson, meanwhile, is back to dating musicians now that her divorce from Chris Robinson is finalized. She brought Irish singer Damien Rice to a December 9 birthday party for director Brett Ratner.
A Hudson pal says: "She is exploring everything while trying to get over Owen."
Uh-oh. Look out now, Kate. A text from Kevin Federline is no doubt on the way.