I find this a very interesting topic. I identify as versatile top, which means for me that I consider myself a top, but will bottom (all be it somewhat fraudulently) in order to fuck another guy. That is, I'm generally prepared to give it up for another top (or versatile top) if the reward is I get to fuck him. (As a side note, I do believe my adventures in fraudulent bottoming have made me a better top.) I must confess, the one on one sex I have had with a fellow top has been some of the hottest I have known. I think this has to do with the element of real competition that enters the room in these situations, i.e., who's gonna fuck who first?, in what position?, and are they prepared to still be fucked after they cum (potentially a sticking point in these situations)? At the same time, some believe the best lover we could ever find for ourselves in the world would be ourselves. (How narcissistic is that exactly?) So in turning to the question, I say yes - absolutely! Not only can a top fall in love with another top, but they can potentially turn themselves into a bottom for the guy.