Why my boss is like every failed relationship I've ever had rolled into one.

Can not communicate.
Can not confront a situation that might be the least bit uncomfortable for her.
Thinks everything I say is a personal attack on her.
Forgets important discussions we've had because she's too drunk.
I stayed in the relationship far too long.

That's really all that applies, but I swear if there was a way to cheat on me, she'd do that too.