I'm going to lie about my reasons to break up
Why do you feel like you should lie about the reason you're breaking up?
I feel like it's not something I should not admit to publicly
It sounds like you might be embarrassed about your reason for breaking up but you should still be honest about the reasons. Instead of lying about why you are breaking up you should be brave and own up to why it is you went that route.
Well, you made me think about it more. I am a moral human being. I think I'm going to be honest about it.
Awesome, I know you are moral and by the sound of it you have honesty in your soul. You will be respected for that if nothing else in this scenario. I think you're amazing.