In It's Complicated, Jane privately asks Harley about what he saw at the hotel:
Jane: What did you see and what do you know?
Harley: Nothing. Really.
Harley: Okay, he checked in, then you arrived. Then you met at the elevator, possible kiss there.Then the doctor went up and the doctor came down. Then there was a thumbs-up, but that's it.I have no idea what happened in between.
Jane: Have you told Lauren?
Harley: No, and I won't.
Harley is Lauren's fiance, Jane & Jake divorced so many years back. Lauren is Jake and Jane's daughter. Harley saw Jane & Jake meeting at hotel. this is what Jane asks him in this dialogue.
How did Jane know that Harley saw her & Jake at hotel?