Did you know Fritz Klein wasn’t just a groundbreaking bisexual activist but also the mastermind behind the Klein Sexual Orientation Grid? 🔢📊 This bi legend literally charted the complexities of attraction before it was cool. 💖💜💙 Fun fact: He was once called "the Einstein of sexology." 🌟 Let's celebrate the genius who showed the world that sexuality is a spectrum, not a checkbox! 🌈

📚: