because he can appear sane much of the time.
Truth. They are excellent actors. Though I'll say this, as their alcoholism progresses it becomes harder and harder to keep up that act. My STBXAH can't keep it up except from an isolated position..so he has totally broken himself off from his entire family, has no friends that visit his home, and of course has me to blame for it all
I wouldn't take what a raving lunatic says about me seriously, and that's what they are transform. Sick lunatics.