Hudson was spotted attending his New York City concert on Sept. 10, and fans spotted the pair riding roller coasters at Disney World in Orlando on Saturday. TMZ also reports that Hudson was in attendance for Jonas' House of Blues performance later that evening, and that the two stepped out for brunch the next morning in Miami.
Hudson called it quits with her ex-fiance, Muse frontman Matt Bellamy, in December, and was linked to Dancing With the Stars pro Derek Hough in the spring of this year.
After splitting from Culpo, Jonas told ET that he was diving head first into his work -- including continued promotion of his album and a new role on Fox's Scream Queens.
"It's always hard and my thing now is focusing on my work and staying as busy as I can, as creative as I can be," he said. "These are the times you’ve just got to dive in and get lost in your work and that's what I'm trying to do."