I'm reading a book that talks about sexual fluidity that got me thinking. I have noticed, at least for myself, that as I get older and more comfortable with who I am my sexuality is becoming more flexible. I would identify as heterosexual, but my openness to ideas, sexual acts, and things I am stimulated by has increased. I'm wondering what people think about their sexual fluidity, how it shows up, and if they see similar changes as being more a result of biology or culture (i.e., the common - though I don't know how correct - idea that female sexuality is more fluid than that of males).