Here's an analogy I made about being pansexual during an educational talk about sexuality.

Being pansexual is like liking so many colors but not being able to pick one. And when you're forced to pick one, you're uncomfortable and you don't want to leave the other colors. So you try to pick another, and feel the same way. You can't choose one. But sometimes you want to be able to. Some days you prefer one color over another, but you still love them all. You can and will color with any of them. They are all lovely colors in your opinion, and you want to always be able to color with them.