06/08/2009 at 08:30 PM EDT
If anything can be read into a winking emoticon, Lindsay Lohan
and Samantha Ronson may be a couple again – at least in Lohan's view.
"Leaving London but with my favorite favorite!!!" Lohan, 22, wrote on her Twitter page Monday as she and Ronson were photographed at a London airport terminal together awaiting a flight to Los Angeles.
Further fueling speculation, Lohan adds: "Great news to share!! Maybe .... ;)"
Lohan, 22, and Ronson, 31, both have been in the U.K. in recent days but weren't seen spending time together – they stayed at separate hotels – though there was a near-miss last week when Lohan showed up at London's Bungalow 8 club where Ronson was spinning – only to have Ronson make a dash for the door, according to the Daily Mail.
Still, a source tells PEOPLE that for weeks now Lohan has told pals she's patched things up with Ronson.
"They haven't started fighting yet, but they are back together as far as Lindsay is concerned," says the source. "Lindsay has been doing so much better and has been giving Sam her space. She is really dedicated to making it work."
Additional reporting by JENNIFER GARCIA