The houseguest rolled in around 2am, drunk and sobbing... no one understands him... everyone is against him... all of his problems are caused by other people and other things... and... I snapped. I was unkind. (Well, I was truthful and tactless, anyway.)
He's leaving this morning -- D. has graciously offered to take him in for the rest of the week.
I feel like a bad friend but the simple truth is that this person is an alcoholic mess--has been for a long time now--and I find my tolerance for his behavior is fading fast.