Without even doing it consciously, I find myself always with a nemesis. My current one is getting the awkward silent treatment from me at the moment. It's like a marriage can walk away from at the end of each day.
When you view true opposite sides of the spectrum, the PHB is Asok's true nemesis... and the situation is more insidious because the PHB is too stupid to know he's a nemesis. (A true hider and he doesn't know it).
"You can't fix stupid." - comic Ron White; a.k.a. Tater