My XH is like that too. He comes by and will be sitting on the sofa or using the computer when I arrive. It's like he's waiting for me but when I suggest he come by he says "I don't think that'd be very healthy" WTF.
There is a poster (not sure who) who's WAH/MLCer keep coming around because he wanted to maintain some sort of connection to her and the family...they're back together now.
Jen *The more anger towards the past you carry in your heart, the less capable you are of loving in the present*