That's awesome that he's coming to your house. You might feel more secure in your own place than in a public one.
Do you have time to buy yourself something to turn him on? Something to remind him what he'd lose if you separated?
If he does bring papers, maybe ask to think about it. Ask for the MC as a condition if you feel comfortable. Some kind of gesture that says that YOU can feel comfortable with having tried everything. If you get a good referral, you'll get a good counselor. You can even have a first meeting with her alone to test her theories. Or maybe Retrouvaille in May. http://www.retrouvaille.org/dates.php
You don't have to be a passive waiter to see if he wants to return. As MWD points out, when he seems open, test the waters. Just be ready to pull back if it is freaking him out.
I was reminded that if my W wants a separation, then it doesn't mean there isn't love. It means there is hurt, and hurt comes from his love. Remember that. You are both hurt. Rebuild and let go of expectations from the past.
While you may not be now, or after having met him, I feel so much hope for you. I think you can make this work through considerate and loving words and actions.
