Heather, When my xh was nice (and even still to this very day), my radar would go up and I would wait to see just what he wanted or how he had screwed me over in some scheme of his. I learned early on that they aren't always nice to be nice. I hope that I am wrong about your h.
How to handle them when they are nice? Accept them for who they are and accept the being nice for that particular day. Tomorrow is usually a different story. Remain calm and speak in a calm manner to them. The calmer you are, the harder it is for them to blame you for their problems.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
