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."