The DJ regularly visited the troubled actress while she was undergoing a drug rehabilitation course at the UCLA Medical Center and the former lovers will rekindle their relationship now Lindsay has been released.
Samantha has already reportedly been telling friends they are a couple again.
A source told X17online: "Samantha always wanted to `fix` Lindsay. Now that Lindsay has been legally and emotionally beat down, Sam is back to work trying to help. Apparently Lindsay never got over Sam so she was all for rekindling the relationship."
Meanwhile, Lindsay is to receive outpatient treatment several times a week
The `Mean Girls` star - who left the UCLA Medical Center on 24.08.10 after spending 23 days there as a patient - will continue to visit the facility on a regular basis, an arrangement she is said to be happy with.
A source told RadarOnline.com: "She doesn`t have a choice but she`s not fighting it.
"Lindsay is going to do what she has to do. She wants this all behind her."
Lindsay was originally ordered to serve 90 days in prison followed by a 90-day stint in rehab as punishment for violating the conditions of her probation set for a 2007 driving under the influence conviction.
However, she left jail after just 13 days and was released from rehab early on doctors` advice, after medical assessments apparently showed she does not have an addiction to prescription drugs as had previously been claimed.
The 24-year-old star employed a three-car decoy to ensure her release was undetected and onlookers were left mystified by the "secret" way she apparently disappeared from the facility.
One source told HollywoodLife.com: "UCLA Medical Center was surrounded. I was located on the fourth floor, where Lindsay was staying. Two police officers walked in and turned the corner. Downstairs in the lobby there were at least six cops with walkie talkies and a plain clothed security guard running the show.
"But as quickly as the contained madness occurred, it subsided and every officer disappeared as if nothing happened at all.