Lindsay Lohan back with Samantha Ronson?

London: Lindsay Lohan, who is out after serving a prison sentence and rehab session, has reportedly rekindled her romance with DJ Samantha Ronson.

Lohan, 25, and Ronson are now said to be in the process of working out their relationship, which is widely believed to have led to the meltdown of the `Meangirls` star.

The `Machete` actress, who dated Ronson until April 2009, is said to have been in constant contact with her former lover since leaving rehab last month.

A friend of the troubled star told Life and Style magazine: "Lindsay and Sam started speaking as soon as Lindsay got out of rehab. They text constantly. It turned into something more, and they`ve secretly hooked up."

Ronson, 31, regularly visited Lohan while she was undergoing a drug rehabilitation course at the UCLA Medical Centre following her 13-day prison stint for violating her bail conditions of a 2007 conviction for driving under influence.

Lohan is said to be back to her wild partying ways despite claiming to be sober just 18 days after being released from the rehabilitation facility.

"It`s the same old circle of lying and denials. She`s telling everyone she didn`t go out. We`re like, `Lindsay, people saw you there!`. It looked like she didn`t want to be noticed. Everything that she went through seems not to have changed her a bit," a source told Us Weekly magazine.