Friend upset by man’s assumption of interest

DEAR HARRIETTE: A childhood friend of mine has been in a relationship for more than five years now. He and his partner live together and share a car, and he covers some of her expenses, etc. They are fully enthralled. But honestly, I get the sense that he was never truly fulfilled by his choice. He always tells their story as if things just sort of happened, not so much that he chose things this way.