After Lindsay's appearance at the White House Correspondents dinner, LiLo was apparently very cosy with former flame Samantha in New York last weekend.
"Lindsay and Sam were whispering and laughing, and they left the club holding hands," a source told x17.com.
"They didn't care who saw them, and they definitely seem to be back on. It was just like the old days - they couldn't get enough of each other!"
Lindsay's relationship with Samantha was very tumultuous, lasting for two years on and off until they broke up in 2009.
After the break-up Lindsay said: "I never really thought about women before. It kind of just happened with Samantha."
"We might reconcile the relationship, maybe. I don't know."
What do you think? Are they back on?