It’s honestly surprising that Smulders made it this far without giving her husband details before.
It’s certainly never intentional, but it’s hard to talk in circles without letting little details slip out.
On the plus side, while Cobie Smulders gave up some spoilers to her husband, he was able to keep his mouth shut so that nobody even knew that he knew until long after the film’s release.
It’s probably also difficult to live with somebody without being able to talk about your work.