Overview
That person who's being so nice to you right now -- are you worried that they might have a hidden agenda? If so, you should hold off placing the level of trust you were about to in them. Keep the rest of your plans under lock and key until you know exactly what this person wants from you. It's not appropriate to interrogate them or anything -- just hang back and observe them. If anything weird is going on with them, it will show itself soon enough.