Instead, it is he who is in a sense unfaithful to his marriage vows. Loyal, faithful, and kind, she never leaves her husband no matter how low he sinks into the depths of depravity.
Like the bad omen of legend, the narrator believes Pluto and his successor have led him down the path toward insanity and immorality. The black cat: More than just the title character, the black cat is also an important symbol.