I am still worried about how I should act tomorrow when H gets here. I have been friendly, welcoming and helpful when H has stopped by in the past. I think I need to be how you are when a salesperson comes to your door trying to sell you something that you don't want! Polite but uniterested? Strong and confident and dignified.
Just don't be mean, otherwise I am not sure it matters how you act.
Remember in MLC You can do nothing to help the sich you can only push him deeper in the tunnel