I'm going to flake on a dance
Are you sure that you want to flake on a dance?
Yes, I was thinking about it for a very long time and eventually decided to flake
It's pretty wasteful to pay to go to a dance and not go. That being said, it's understandable that you don't want to go if you don't like dancing.
I'm not flaking so I can come with some other friends who are not going. I'm flaking so no one now I don't like dancing.
If you've decided that you truly don't want to go dancing, it's okay to not go to the dance. However, you should consider whether it will be as bad as you may have envisioned. It would be a shame to waste the tickets if they have been purchased already.