If at first you don’t succeed…

With that in mind, David Hasselhoff popped the question to his gorgeous girlfriend on top of the Sydney Harbour Bridge on Monday -- his third attempt to win her hand!

Hayley Roberts, 32, previously nixed the proposals from the 59-year-old Baywatch actor, but the third time appears to be the charm, judging from two photos he posted on Twitter.

In the first picture, we see Hasselhoff  on bended knee proposing to the Welsch stunner, and in the second one, we see the couple kissing.

Don't hassle The Hoff!

David Hasselhoff has been bombarding his much younger girlfriend Hayley Roberts with marriage proposals, but her mom says her daughter is just not ready yet.

"She is saying no to his proposals," Hayley's mom, Margaret Roberts, tells RadarOnline.com in an exclusive interview.

"She has told me that he keeps asking her and she says she likes him a lot, but she's still quite young and that's what the problem is."

David Hasselhoff says he's "in like" with new girlfriend Hayley Roberts, and he wants everybody to know it.

PHOTOS: David Hasselhoff and Hayley Roberts at Coachella

Although he's almost twice Hayley's age and older than her parents -- he's 58, she's 31 -- the Hoff says "I wooed her.  I was a gentleman."

Hasselhoff's latest gig is as a judge on Britain's Got Talent, and it was during an audition in January that he first spotted the cosmetics saleswoman and part time model.

Hayley, he says, was sitting in the audience and he was immediately drawn to the Pamela Anderson look-alike.

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They've been inseparable ever since, so much so that Hasselhoff whisked his Welsh beauty off to the Coachella Music Festival on Friday, where PDAs were on full display.

The twice-divorced former Baywatch and America's Got Talent star isn't ruling out a third walk down the aisle.

PHOTOS: David Hasselhoff Performs on Stage at the Hertfordshire University Forum 'Baywatch Flirt' Night

"I'm big on romance," he says.  "In the future, maybe I will marry again."

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