Thank you for taking the time to write to us here. This is a very common pattern that has been written about here in the book, The Dance of Intimacy.
After 6 years I would not expect much to change, and it doesn’t sound like he has the willingness to make a commitment beyond what the two of you already have. While I certainly wouldn’t know if this is happening in your situation my experience has been that couples who find themselves in a longterm relationship like this are each struggling with a fear of commitment. One by choosing someone who can’t commit, and the other by choosing someone who will tolerate it.
It is terrific that you are working on this with your counselor, and I’d encourage you to keep doing so. My experience is that until you decide his behavior is unacceptable you are likely to keep getting the same results. Unless you have a “no”, your “yes” won’t mean very much.
Wishing you patience and peace,
Proof Positive Blog @ PsychCentral