I'm going to break the trust of my best friend even though I had good intentions
How can you have good intentions breaking your friends trust?
I'm drunk, it's okay to fuck up sometimes, right?
Even if you think you have good intentions behind your actions, it's wrong to break the trust of your friend. Trust in someone is hard to restore after it is broken.
Why are you being so mad at me? We all make mistakes or do stupid things.
I am not mad at you I am trying to help you out. There is not a reason to break the trust of your friend. It is better to be honest up front to prevent trust needing to be broken.