RACHEL McAdams has a habit of dating her co-stars. Now she is said to have fallen for another of her leading men.

Us Weekly reports the 36-year-old actress is seeing her True Detective co-star, Taylor Kitsch.

“It hasn’t been long,” and insider said. “But it’s serious.”

Another source said the Canadians have been “friends for years” but “grew closer on set”.

media_camera Getting close ... Rachel McAdams chats with Taylor Kitsch on the set of True Detective.

Kitsch, 34, recently broke up with fitness instructor Jennifer Welch. Now, sources said he only has eyes for McAdams.

“I don’t know if it’s full-blown love yet, but they talk constantly,” a source said. “They’re really into each other. She talks about him all the time.”

The pair was spotted dining at West Hollywood’s Osteria Mozza on June 2.

media_camera Leading man ... Taylor Kitsch is rumoured to be dating Rachel McAdams.

McAdams has a history of hooking up with her co-stars, including Jake Gyllenhaal (Southpaw), Ryan Gosling (The Notebook) and Michael Sheen (Midnight in Paris).

The actress told Glamour magazine in 2012 that she prefers to date her co-workers once filming has wrapped.

“A set may seem like a good place for romance, but I don’t think it’s very conducive; it’s too distracting,” she said. “Every relationship I’ve had with a co-worker comes after the fact.”

media_camera Ryan Gosling and Rachel McAdams in The Notebook. media_camera Jake Gyllenhaal and Rachel McAdams star in Southpaw.

Originally published as McAdams snags new leading man