Not exactly, if I understand what you are asking. Not that love is NOT subject to God's nature but that wasn't quite what I was getting at either. Love is defined by God's nature is more like it, but even that isn't what I wish I knew how to say better. Our minds don't handle it well: I could say all love proceeds from God, he being the cause of it --but then from that some would infer that therefore everything called love is pure and good.
What I had hoped to accomplish was to show how our concepts and even definitions concerning virtues, specially as we attempt to apply them to God, fall short. Yet whole theological systems are built around the resulting eisegesis used to develop such things. "It is simply illogical that God could be both omnipotent and omnibenevolent", I hear them saying, for example, when they don't understand either concept, when it is God we are talking about.
Certainly I did mean to imply that our definitions of love don't very well define God. But my reason for saying so is that any virtue, and indeed any attribute of God, all of which God possesses in immeasurable degree, are defined by his being, and not by us. I like to say he "invented" such things as time, logic and even existence, but I say that for the purpose of argument more than to describe how they depend on him for definition.