09/12/2013 at 11:00 AM EDT
Romain Dauriac, your Facebook history is safe.
"I'm not the jealous type who does background checks," his new fiancée Scarlett Johansson
told reporters at Tuesday's premiere of her new movie Don Jon
at the Toronto International Film Festival. "I'm not that type of girlfriend."
Johansson, 28, rocked the red carpet in a little black dress and flashed her engagement ring from the French journalist.
In her new movie, the Avengers
star plays a demanding, gum-snapping Jersey girl who tries to change her new boyfriend's (Joseph Gordon-Levitt
"I am guilty of this, and so are many people – you just want your partner to fit into the box you constructed for them. It's easier that way," she says. "It's kind of like, 'Why can't you be more like me?' I think that's what we all want."
But Johansson says that experience has taught her how to keep these impulses in check.
"The challenges of a relationship are what help you grow into an evolved person," she says.