Watch out Justin, two of your exes are comparing notes about you!

Now that Hollywood starlets Jessica Biel and Scarlett Johansson are no longer vying for Justin Timberlake's attention, they've talked to each other about their experiences with him.

The two were recently spotted shopping together in Paris - and sources say the new friends shared intimate details of their relationships with the "SexyBack" singer.

What's more, the actresses learned two-timing Timberlake was playing one against the other - telling each woman what he thought she wanted to hear - and now NEITHER is interested in dating him!

"After Scarlett and Jessica talked, they both felt used and manipulated," said an insider.

Justin, 26, was spotted out with curvaceous Scarlett, 22, first - before he and 25-year-old Jessica were caught cozying up on the slopes during the Sundance Film Festival in Park City, Utah, in January.

But by Super Bowl weekend in early February, Justin was in Florida with Scarlett, dancing and holding hands at a postgame party.

And if bouncing between the two women wasn't enough, Justin placated each by making it clear he wasn't interested in the other!

Pick up this week's issue of The ENQUIRER for all the details!