If I tell you we’re going to the football game and you’re excited for that and then I take you to the ballet instead, it’s still wrong! It’s lying!

Football enthusiasts are generally not morally opposed to ballet. This is not a good metaphor. Imagine instead that you're opposed to the death penalty, and I tell you that we're going to the ballet, but it's actually a public execution. I desperately hope that you can understand that that's worse than the reverse situation.