Robert can sense from Jack's facial expression and his tone that he wants to talk about something serious.
"What is it?" Robert asks.
"Um, I feel like there is something Rosanne already knows about you that I don't know yet. What is it? You can't possibly only tell her and not tell me!"
Robert hesitates. He knows he should tell Jack. He takes a deep breath.
"Yes. There is something that she has found out. I can tell you about it. But give me a second, let me run back to my apartment. I'll meet you at the intersection right in the middle point of your building and my building, OK? Say in a minute?" Robert says.
"OK." Jack thinks a minute probably is underestimating the time needed to go back to his apartment and then meet again. It takes at the very least 6-8 minutes for him to walk to Robert's apartment.
"But what did you need to go back to your apartment for?"