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Sadly for EVA MENDES she wanted to grow up to be a nun... and it's hampering her film career.

The Ghost Rider star hates sex scenes so much that she broke down in tears due to the stress of an on-screen romp with JOAQUIN PHOENIX in new flick We Own the Night.

Eva said: "I did very much want to be a nun when I was younger.

"I guess there is this little Catholic girl still inside me somewhere because otherwise I would probably have had no problem with that scene.

"It's something I just have to deal with."

We Own The Night is the first time Eva has stripped naked in a movie.