There's nothing romantic going on between Harry Jowsey and Sia - despite those recent photos. "Harry and Sia are just friends who bonded over both being from Australia and are just being supportive friends of one another," a source told Us Weekly exclusively after images of the duo holding hands went viral. A second insider told Us that the two have "some playful and flirtatious energy between them" but "aren't dating." Their banter is "all lighthearted" even though Sia, 49, has "made it clear she has a little crush" on Jowsey, 28.