His sexual orientation was a source of unending speculation, until I began to notice his smile. In a word, it was tentative. Never revealing bottom and top teeth simultaneously, it was less of a smile, and more accurately, as I began to imagine, a kind of muscle-memory-bound habit. Resulting from a self-conscious adolescence spent concealing any expression of amusement which would betray the unequivocal fact that Jon liked boys. It was a reflex born out of necessity, an adaption evolved in reaction to a peculiarly repressed social environment, and its formation so adept that ironically enough, as it were, it would have made Darwin proud.