Are you also imagining that John experiences deep pleasure from this faux love? If he is, then he's not "in love with" being in love (or not just in love with that)— since he's not in love. And it's interesting that what you actually wrote is of his being "in love with the feeling of being in love" (emphasis added). This raises the further question of whether being in love feels any particular way. If we assume that it does (which seems like a big assumption), then your question is whether we can imagine a situation in which: John is not in love with Hilary; John is having those experiences that characteristically attend, but do not exhaust, his being in love; (perhaps as a consequence) John believes that he is in love with Hilary; and finally John is taking deep pleasure in having those experiences. Putting aside major reservations about the presupposition involved in the description of the second feature of this situation, I don't see why not.My professional reply is that love is like oxygen. You get too much, you get too high. Not enough and you're gonna die.