Eva Mendes has a message for Ryan Gosling's ex Rachel McAdams: "Hey girl ... hands off my man."

Mendes, 39, is reportedly livid that McAdams, 34, has been relying on Gosling, 32, since her split from Michael Sheen, 44. (If we downgraded like that and it was all for naught, we'd be sad too.)

McAdams and Gosling remained friends following their erstwhile romance (that sparked on the Nicholas Sparks' film 'The Notebook'), but now that McAdams is single, it's become an issue.

"Rachel's always kept in touch with Ryan, but now that she's split with Michael, she's been calling him and using him as a shoulder to cry on," a source told Now Magazine.

The source added, "It hasn't gone down very well with Eva, to say the least, but Ryan wants to be there as a friend for his ex."

No ill will toward Mendes, but we can't be the only people gunning for a Ryan-Rachel reunion. They were cute, Canadian and perfect. Can someone (ahem, Gosling) please make this happen?

(Plus, take a look at Mendes -- she'll have no problem moving on!)

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