It is definitely a spectrum. My best friend of the last 20 odd years once said to me, “I’m theoretically bisexual, but honest to god bisexual in some ways. Theoretically in the sense that I cannot imagine myself being emotionally intimate with a man, but I wouldn’t shut it down if I ever found myself in a position where it was working for me. Honest to god in the sense that in the exact moment of peak horny, I am attracted to both men and women.”

Every serious relationship he’s ever had, he’s had with a woman.