updated 01/31/2012 AT 2:30 PM ET
•originally published 01/31/2012 AT 11:45 AM ET
It certainly looked like a picture-perfect proposal.
Baywatch alum David Hasselhoff, 59, seemingly broke news of his latest attempt to pop the question to Welsh model Hayley Roberts on his Twitter account Wednesday through a series of mysterious messages and photographs.
“Tried it again on top of the Sydney harbour bridge!” he Tweeted alongside a photo of the couple in Australia. In the picture, Hasselhoff is down on one knee, holding Roberts’s hand.
Roberts, 32, played it coy online, too. Her reaction to Hasselhoff’s Twitter P.D.A.? “:)))))) xxxxxxxxxxxx,” she replied.
But the actor tells PEOPLE now that it wasn’t official.
“The truth is I’m having a fantastic time with this lovely lady but at this time we have no plans to marry,” Hasselhoff tells PEOPLE. “But who knows? As they say in Wales, “Cymru Am Byth!” or Wales forever!”
The couple met about a year ago at auditions for Britain’s Got Talent – he was a judge in 2011 when she asked for his autograph.