I know if alcohol was put in front of my face I would have a really hard time turning it down. That is how I messed up so many times before. I avoid those situations for now. I do not allow alcohol around me, and I do not go anywhere that their may be alcohol. Until I am stronger, and further into my sobriety it is what I have to do. For now maybe you should make it clear to your buddy not to bring alcohol over to your home.