Note: DON'T RUSH your conversations with him just because he got a sneak peek. Still wait to be sure you've consulted your soliciter and are confident in your answers. He can wait, and don't be pressured to give your opinion right away. You have a right to legal advice, though he doesn't need to know that's the reason for the delay. He may guess. Let him.
You are still on your timeline, not his. Stay firm if you aren't ready to lay it all out yet.
