A bitch in your ear

a feminine influence in one's life who manipulates a person's ideas of what's good and what's bad for their own self.

Typically achieved through emotional manipulation

"Little Caesars tastes so good when you don't have a bitch in your ear telling you that it's nasty"

Ear bitch

A person who can silently stay supportive in your earbuds/headphones or converse while you go about your day, providing love and luck.

My ear bitch is talking, hold on!