I am interested in any stories or experiences by men too. River's right - there are plenty of discussions of women who were exclusively or predominately lesbian or straight and then became involved with men or women later on in life.
I think there is a perception that women are much more likely to be bi than men. And there is some surveys that back this up. Men are believed to be more rigid in their sexuality, so to speak. I don't know if this is actually true or if men have more to lose by expressing or having a more flexible sexuality and so are more likely to be closeted, or simply unaware of the range of possibilities. At any rate, looking forward to any thread replies!