After a month, I was confident I made the right choice to break up with him.
Why do you think it was the right choice?
After seeing him at a party, I realized he was not as smart as I thought.
It's good that you made the right choice. It's also good to be confident in your choices. You should work to be sure that you are making the right choice, though.
I'm a fucking genius and that means I don't need to make sure about things. I am always right.
I am glad that you are confident. It helps when making decisions quickly. I hope things work out.