Zoe Saldana gets a warm kiss from Bradley Cooper while filming there new movie "The Words". Credit: GSI Media

Bradley Cooper is single again.

Three months after Cooper, 37, and his Words costar Zoe Saldana, 33, first hooked up, the couple have called it quits, a source confirms to the new issue of Us Weekly.

"They're definitely not together," the insider says of the pair, who met while filming the upcoming thriller and were first spotted kissing at a New Year's Eve bash.

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Though Saldana -- who split from fiance and love of 10 years Keith Britton in November -- was spotted hanging with Cooper's mom, Gloria, in February, pals say she isn't too bummed about her breakup.

"She and Bradley weren't superserious at all," says a pal of Saldana and Cooper, whose A-list exes include Renee Zellweger, Olivia Wilde, Jennifer Lopez and Beginners actress Melanie Laurent.