They were spotted holding hands as they left a New York nightclub in the early hours of Saturday morning.
And Leonardo DiCaprio and former flame Toni Garrn set tongues wagging once again when were seen at the same bash on Tuesday night.
The actor, 42, and the model, 25, both turned out for the Unitas Gala Against Human Trafficking at Capitale in Lower Manhattan's Bowery District in New York.
Table talk: Leonardo DiCaprio turned up at the Unitas Gala Against Human Trafficking at Capitale in New York on Tuesday but didn't sit with his ex, Toni Garrn, who was also at the event
Red carpet: Leo and Toni, 25, who wore an elegant grey mini-dress for the event, sparked rumors that they may be back together after they held hands leaving a club at the weekend
Toni hit the red carpet in an elegant grey mini-dress with an asymmetrical neckline revealing one shoulder and one long sleeve.
The German-born Beauty smoothed her blonde hair back into a pony tail and she showed off her perfect scarlet pout as she posed for snappers.
Leo was a late arrival after manning the phone bank for the Hand In Hand Hurricane Relief Telethon benefiting areas in Texas and Florida