From a mans angel I will say that this could be combination of things.
1. Guilt 2. Confusion 3. Security 4. Comfort 5. Keeping a hold of something you have for sure because guys don't like to lose a sure thing, unless something else comes along.
I think the DB couch is a good idea, actually a very good idea.
He could be enjoying this a little bit because maybe now he gets to "breath" but still have you. Let us know what the DB coach says because I have some other opinions on this but I will hold out until you speak to them.