Obamalini may well be “bi”, with a preference for men. The apparent lack of old “flames” of the female variety i a very strange thing....of course, so was marrying the lovely Michele.
I remember reading an Ann Landers (or was it Dear Abby?) column one time in which a reader asked about bi-sexuality. Ann replied that there really is no such thing. Presented with a choice of a man or a woman, the "bi" will always (always!) choose their own sex. Lesson: they are homosexuals.