All is not well between Jennifer Lawrence and Bradley Cooper on the set of their new film, and Breaking Celebrity News has exclusively learned jealousy is to blame.

The two, whose chemistry with one another earned the Silver Linings Playbook a host of Oscar nominations, aren’t seeing eye-to-eye about the Hangover star’s new girlfriend, Suki Waterhouse, while on the set of director David O. Russell’s new Abscam scandal movie.

And sources tell Breaking Celebrity News that 22-year-old Jennifer is jealous because Bradley, 38, is spending his free time with Suki, 20 — instead of her!

“When Bradley and Jennifer made Silver Linings Playbook and Serena together they were inseparable,” a source tells Breaking Celebrity News.

“But now, Bradley has been spending his free time with Suki, and she feels like she’s lost her partner in crime.

The source continued, “They haven’t been hanging around each other as often as they used to. Bradley flew Suki over from London to Boston and he took her on a tour of the city. Then, he flew to Paris to see her the moment he had a break in filming.

“Because he’s spending all his free time with Suki, Jennifer’s only really seen Bradley on set and she’s grown a little jealous about it."

As Breaking Celebrity News previously reported, Suki has Bradley wrapped around her finger as he jets around the globe to see her.

Last week, the pair was seen strolling arm-in-arm during a romantic break in Paris – the city of love – as their relationship heats up.

“Suki has Bradley marching to the beat of her drum,” a source close to the couple told Breaking Celebrity News.