Kate Hudson, 36, and Nick Jonas, 23, are reportedly "hooking up".
The pair sparked rumours they are more than just friends after being seen during a trip to Disney World in Orlando, Florida, on Saturday (26Sep15).
A picture of Kate and Nick on a ride at the amusement park was shared by an onlooker on Twitter, with the caption: "Nick Jonas and Kate Hudson were at magic kingdom today. No big deal."
TMZ.com later reported that the pair have been "hooking up" in recent weeks.
According to the website, Kate was also in the audience as Nick took to the stage for a performance at the House of Blues in Orlando on Saturday night
Pictures later emerged of Kate and Nick looking cosy as they enjoyed a brunch in Miami.
Kate was first linked to Nick when she went to see the singer perform in September along with a host of other celebrities including Kendall Jenner and Jennifer Lopez and boyfriend Casper Smart.
The Almost Famous actress is clearly a fan of musicians, having previously had relationships The Black Crowes frontman Chris Robinson, to whom she was married from 2001 to 2007, and Muse rocker Matt Bellamy.
Her relationship with fiancé Matt ended in December 2014.
Meanwhile, Nick has been single since splitting from Olivia Culpo in June after two years together.
During an interview in August, Nick said he was still coming to terms with the end of their relationship and had decided not to jump into anything too soon.
"Interesting," he told Adon magazine when asked how being single feels. "It's still an adjustment, getting used to my life on my own is an interesting thing. I'm in a good place of being young and grow and do what I need to do right now."