was known to be a cross dresser and believed to have had a long term relationship with Buchanan...William Rufus Devane King, Here's a wiki on him:
http://en.wikipedia.org/wiki/William_R._KingFor fifteen years in Washington, D.C., prior to his presidency, James Buchanan lived with his close friend King.<3> Buchanan and King's close relationship prompted Andrew Jackson to refer to King as "Miss Nancy" and "Aunt Fancy," while Aaron V. Brown spoke of the two as "Buchanan and his wife."<4><5> Further, some of the contemporary press also speculated about Buchanan and King's relationship. Buchanan and King's nieces destroyed their uncles' correspondence, leaving some questions as to what relationship the two men had, but surviving letters illustrate "the affection of a special friendship," and Buchanan wrote of his "communion" with his housemate.<4> Such expression, however, was not unusual amongst men at the time. Though the circumstances surrounding Buchanan and King have led authors such as Paul Boller to speculate that he was "America's first homosexual president," there is no evidence that King and Buchanan had a sexual relationship.<4>
I have read otherwise, though.