Not everything is relevant. Not everything that is truthful is kind. You seem to have this weird idea that you should prioritize your feelings in all things over your partners feelings, rather than understanding that something simply aren’t a big deal.

I don’t know too many–read: any–marriage and family therapists that would ever suggest you tell your SO every possible thing unless and until it became relevant. There are good reasons that people that practice radical honesty usually don’t have many friends.