*I FELT SORRY FOR THE LAMP! THAT'S BECAUSE I'M CRAZY!!!!*
Thank you, that is quite a helpful explanation.Technically, yes, the thing you're using Fe at has to have its own emotions (= subjective values) because the "e" in Fe refers to external subjective values that Fe constantly references in deciding its own subjective values. If the external entity in question has no subjective values of its own (as would be the case with fire), Fe has nothing to work with. If the fire itself inspires emotion in you independent of any value-having entity's input, you're almost certainly using Fi (i.e. your own, personal, non-externally-obtained subjective valuation of fire) rather than Fe. However, you mentioned that you think of fire as its own entity, in which case, if you've anthropomorphized it enough to ascribe to it its own set of subjective values, then yes, you could be using Fe at it.