I mean, isn't it, like, a breach of contract or something? Like telling an action movie lead "Oh, sorry, I switched the blanks out in your prop guns for real live ammo in the last second to capture your natural reaction to getting shot. My bad. By the way, go apologize to that stuntman for accidentally shooting him." :-)
I get a feeling this is gonna be one of those romance stories where no boundaries are ever communicated clearly, nor even exist in the first place in many cases...
This is actually a huge problem in film, where asshole directors and "method" actors high on their own supply want to provoke "organic" reactions from actors who are literally paid to act. Usually used against female actors, such as Kubrick's abuse of Duvall in The Shining or Jared Leto apparently in every film he's been in.
Billy Zane gave a good reply about the rumor that a table flip in Titanic was a surprise to Kate Winslet in one scene a few weeks ago:
"Is it true that the scene where you flip the table was improvised so Kate would have an organic reaction in the moment?
It wasn’t in the moment. I’m trying to remember how we arrived there. I think it was simply, Why go around it? Go through it. That was perhaps my suggestion. For the sake of good copy, I’ll say yes, but it feels like one of the many conversations I had with Jim. He’s a great collaborator. He inspires and encourages contributions. The more interesting, the better. In this case, it’s a good place to get a sense of establishing possible boundaries and where they’re broken, and danger from this character. As posh and elite and maybe effete as he could be, this is also potentially a dangerous man. We wanted him to be explosive, and it seemed like a well-placed point to perhaps establish levels of threat.
So did Kate know you were going to flip the table?
Oh, I would never have done that just randomly. It would have been dangerous and inappropriate. There’s improv and then there’s chaos. As I recall, it was discussed. It was agreed upon, and the question was, How many dresses do we have? How many place settings? It was all about contingency. I remember the wardrobe department being very grateful. I think we did it about six times, and we only got a drop of orange juice on one dress. Somehow the thing always flew in the direction of the camera, and she was safe from harm, which is more important. I would never have just done something like that with glassware. It was not improv, per se, but it was arrived at on the day. It seemed to be an effective choice."