The former Baywatch star, who has twice proposed to his Welsh girlfriend Hayley Roberts, fuelled speculation he was three times lucky on Monday (30Jan12) when he posted a picture of himself on bended knee on Australia's Sydney Harbour Bridge on Twitter.com.
But Hasselhoff played down the supposed romantic gesture on Tuesday (31Jan12), telling People.com the pair was just having fun.
He says, "The truth is I'm having a fantastic time with this lovely lady but at this time we have no plans to marry."
The actor has been married twice before to Catherine Hickland and Pamela Bach, the mother of his two grown-up daughters.
The former Baywatch star has been desperate to wed his Welsh girlfriend Hayley Roberts ever since they started dating early last year (11).
Hasselhoff has previously dropped to his knee and asked the blonde to marry him on five different occasions, but she has so far turned down his proposals.
However, it now appears the actor has finally got the answer he wanted after popping the question at the top of the famous Australian landmark.
He posted a picture of the pair at the top of the bridge on his Twitter.com page along with the words, "Tried it again on top of the Sydney Harbour Bridge!" adding, "What do you think she said!?!?!" before posting a picture of them embracing in a passionate kiss.
Roberts also kept fans guessing as she suggestively put up a smiley face with lots of kisses on her own Twitter blog.
Hasselhoff has been married twice before to Catherine Hickland and Pamela Bach, the mother of his two grown-up daughters.
The Baywatch star was married to actress Catherine Hickland in the 1980s and after their divorce, he went on to exchange vows with Pamela Bach, the mother of his two daughters, Taylor Ann and Hayley. They split in 2006 after 16 years of marriage.
Hasselhoff, who is now dating Welsh model Hayley Roberts, admits he never imagined he would end up twice-divorced and desperately hopes to avoid further heartache.
He tells Britain's Sunday Express, "I want to be in love. I always try to make it last. I tried (for) 16 years to make my last marriage work but it's up to God, it really is... If you are meant to be together it will work. I would get married again though, sure. I love marriage. I felt guilty my marriages did not work.
"I have always enjoyed being with one person... I am incredibly romantic."