The 27-year-old actress - who was most recently linked with 19-year-old model Liam Dean - was seen growing close to Michael, 18, at a party last week ago, and again at Finale nightspot in New York City and onlookers claim they even spent time in the women's bathroom away from other revellers.
A source said: "Lindsay seems to have this thing for younger men at the moment.
"They were together at a house party of one of Lindsay's stylist friends before Thanksgiving, and were together at Finale on Friday. Lindsay was seen leading him into the women's bathroom, hand-in-hand."
Despite her closeness to Michael at the nightspot, Lindsay - who was also linked to teenage Ralph Lauren model Morgan O'Connor earlier this year - also spent time there with Dean.
The source added to the New York Post's Page Six column: "The odd thing was that Dean was with them all night, even though Lindsay had been seeing him, too."
However, a spokesperson for Liam insisted "it's not true" that Michael - whose mother is the actor's late wife Natasha Redgrave - is dating Lindsay, and the troubled actress' representative added: "Lindsay is friends with Michael but they are not dating."
24.com publishes all comments posted on articles provided that they adhere to our Comments Policy. Should you wish to report a comment for editorial review, please do so by clicking the 'Report Comment' button to the right of each comment.
Shailene Woodley has written an essay detailing her arrest for trespassing and what people can do to help protest the Dakota Access Pipeline. Read More »
Benedict Cumberbatch's wife Sophie Hunter, who already has 16-month-old son Christopher together, is pregnant with their second child. Read More »
10 epic pics.
All the deets.
South AfricaCity Press
Johannesburg CBDResourcing Solutions
HousesR 3 300 000
HousesR 3 220 000
HousesR 1 200 000