Part of Covert Affair Season 2, Episode 9:
Auggie: “When were you gonna tell me about Dr. Scott?”
Annie tilted her head slightly and Auggie heard the smile in her voice as she replied, “Sorry, those details are ‘need to know’”. Auggie smiled and nodded slightly. As he listened to Annie’s heels click away, he leaned back on the desk. Her teasing answer did make him laugh and yet … he felt like he did need to know. He needed to know who Dr. Scott was and when Annie had started dating him. The curiosity just wouldn’t leave him alone.
So, what does “need to know” mean here?