The world of the Lohans is back to normal:

Dina Lohan is self-absorbed and insane.

And Lindsay Lohan is skanking herself out. She's also on the prowl for a new man.

"I'm dating," Lohan, 20, told People magazine yesterday at the Los Angeles premiere of Showtime's The Tudors. "I'm really happy and I'm having fun."

The actress, who split with restaurateur Harry Morton last fall and was recently spotted hanging with Stavros Niarchos at Hollywood hot spot Teddy's, said she'd gleaned some important lessons from her stint at the Wonderland Center in L.A.

"There's no way you can't learn a lot in a program like that, and it's good," she said. "I recommend it for anyone who needs it."

Looks like Jesse Metcalfe was listening.
Meanwhile, post-rehab, Lohan has been a nightlife fixture, causing speculation that maybe she hasn't changed her lifestyle in the way Britney Spears obviously has.

"I'm hearing a lot of [critical] things if I go out, so that always sucks," she said. "But it's like, when do people not say it? They're always going to say things, so I expect it. But I'm feeling really good."

And what about those rumors linking her to oil heir Brandon Davis? "No, I'm not dating him," she said, then hinted: "It's no one here."

At the after-party, Lohan hung out in the VIP area at nightclub Les Deux chatting with British pop star Robbie Williams, who himself checked into rehab in February.