• Ryan Gosling and Emma Stone co-starred in "Crazy, Stupid, Love."

Ryan Gosling and Emma Stone co-starred in "Crazy, Stupid, Love." (Photo : Facebook )

Rumors are swirling that Ryan Gosling, 34, is having an affair with his "Crazy, Stupid, Love" co-star, Emma Stone, 26. The two are currently filming their third movie a musical comedy-drama together and reunited on the set of "La La Land." The filming began on Aug. 10 in Los Angeles.

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Set in contemporary Los Angeles, "La La Land" is a tale of  love between Sebastian, a jazz pianist, and Mia, an actress. The film is set to be released on July 15, 2016. 

Former on-screen couple previously starred in two films together, "Crazy, Stupid, Love" and "Gangster Squad." The "Drive" actor is not able to convince the "Hitch" actress that he and Stone are just good friends.

"It doesn't matter how many times Ryan tells Eva that he and Emma are just friends, she knows there's an attraction there," a source told Hollywood Life.

"Eva stops by the set and constantly calls Ryan to see what he's up to," an insider told the magazine. "If she gets his voicemail, she'll text and text until he gets back to her."

Gosling is known for dating his co-stars. Before having a steady relationship with Mendes, his "The Place Beyond The Pines" co-star, he dated his "Murder By Number" co-star Sandra Bullock, his "The Notebook" co-star Rachel McAdams.

Gosling and Mendes have a daughter named Esmeralda Amada. Mendes previously dated George Augusto and was linked to Jason Sudeikis, Matt Damon, and George Gargurevich.

Meanwhile, Stone's relationship with longtime boyfriend Andrew Garfield is also said to on the rocks although they are still together.