Can you try to describe your personal asexuality?

I've been having a really frustrating experience with my sexual side (more like lack of it), and I've been finding out that the way I've been describing myself sexually has completed changed, and it's been so overwhelming. I used to have it all figured out but something changed and I can't tell what.

It's been such a mess, and I'm hoping that hearing other people's experiences and thoughts might help me feel less lost.