My first observation is that he's looking for more interaction with you:
1 - because he keeps contacting you with the same requests, even though you've responded over and over again with the same response.
2 - he wants lunch with you when you go to Comcast. (BTW, DirecTV is better)
3 - He took absolutely nothing. This is the most confusing, or telling sign.
It makes me wonder if he's trying to keep you on a line for a safe place to land if things with OW don't go as planned. Cake-eating at its best. My W still has all of her belongings except for some clothes and all of her primping/beauty items.
I would think hard about going to lunch with him. I know the lure of it; but I'm not sure what the result of it would be. My thoughts would be to treat the encounter like a business deal. Maybe ask him what he wants to discuss. I'd be wary of R talks since his actions show he's in no hurry to get his stuff out of your house.
