Yesterday, on our way to school, my four-year-old commented, "When you love somebody, it can't be unloved. That's 'irreversible change'." I'm not sure which I appreciate more, the sweet sentiment (don't we all wish this were 100% true?), the generalization of a concept he learned on Sid the Science Kid, or the example of unloved in this unconventional usage.
Why do I find this so compelling? On reflection, perhaps it's because instead of the adjectival un- prefix (unhappy, unclear), which is about states, what we have here seems from context to be the verbal un-, which is about reversing actions (unlock, untie). Love as an action, something that effects a change of state, not just a state.
Or maybe I'm just in a sappy mood. :-)