According to a “Page Six Exclusive,” for the past month or so Eliot Spitzer has been staying at a Fifth Avenue building owned by his father, rather than the apartment that he shares with his wife Silda Spitzer. The former governor has a perfectly reasonable explanation — a spokeswoman says he wants to “spend more time with his ailing parents, who live there” — but nevertheless, the Post says the situation “sparks rumors.” What could possibly have come between the Spitzers?