In a world that tends to separate people into defined groups, it’s not easy to be bisexual. Psychologist Lisa Diamond says the stereotype is that people who claim to be attracted to both sexes just haven’t come out yet. Of course, it’s much more complicated. In 2008, Diamond wrote a book about how flexible sexuality is for women. These days, she’s learning men are, as she puts it, “pretty darn sexually fluid, too.” Monday, Lisa Diamond joins Doug to talk about the spectrum of human sexuality.