It’s love with nowhere to go
I suppose the principle still holds: the "love" I have for those versions of those people cannot go anywhere, but that feels dissonant with not wanting to know these people as they are, or knowing the relationship I'm wishing for is otherwise ill-fated. In either case, the relationship cannot continue, and that drive the sense of grief anyway, so maybe I'm just splitting hairs.
Such is the complex nature of grief and of human relationships, I suppose.