Actress is spotted wearing diamond ring
The couple, who split in April, caught a flight back to LA together after spending time in the UK.
Lindsay, 22, was even showing off a diamond ring on her left hand.
Leaving London but with my favourite, favourite travel buddy and great news to share! Maybe. she wrote on Twitter.
Sam, 31, was staying in London with her brother Mark Ronson as she hit the decks for a series of gigs on the club scene.
SEE PICTURES Lindsay Lohan and Samantha Ronson– The story so far>>