While I have had many an hour or more wasted on this type of "consultation," I have never charged for it. Why? Empathy.
So what is going on here? I feel for this client. He or she DOES in fact love his or her wife, but at the same time is in such pain and turmoil because it is a bad marriage. This client desperately wants to be noticed, heard, loved, appreciated, or whatever it is that his or her spouse can't or won't give. The client comes to my office with hope that maybe by doing so, he or she will change his or her spouse. Unfortunately, I don't believe it works.
I don't believe you can change anyone except yourself, and even that is hard to do. I do think that for this type of "client" it is both smart and empowering to go and pay this type of visit with a divorce lawyer- BUT only if he or she keeps it a secret. Once the secret is out, it's merely an empty threat.