On the subject of discovering new things about ourselves as we continue to age, David Bowie (who is listed in the OP's article) later famously said that he regretted ever calling himself bisexual, because he announced it in a period of experimentation, and he felt a pressure (particularly in the American market) to fly some kind of flag or support 'a cause' because of his perceived sexuality over there. He never wanted to champion a cause, and it got in the way of things he wanted to accomplish. By all accounts, he was largely heterosexual, but did openly experiment "out of a sense of curiosity and a genuine allegiance with the 'transgressional'."

I've considered myself bisexual for most of my life at this point. I definitely enjoy the physicality of both men and women. But in more recent years, I've wondered if I lean more romantically towards women than men. But I've never had a female partner, so I can't say for sure.