Credit: Jason Kempin/; AP Photo/Alastair Grant

A Tiger can't change his stripes!

A year after the infamous Thanksgiving weekend car wreck that ignited the Tiger Woods sex scandal, the golfer, 34, is up to his old tricks.

"He's seeing different girls, creeping around in a low-key way," a Woods insider tells the new Us Weekly. "I don't think you can call it 'dating.'"

The source continues that Woods is adding a grotto-style pool -- like the one at the Playboy Mansion -- to his $50 million Jupiter, Fla. home.

He probably won't break it in over the next couple weeks, however. Says the insider, "The kids and his mom will join him for Thanksgiving."

His ex-wife Elin Nordegren, meanwhile, is "not dating, but is in great spirits," the source tells Us.