At the same time, if you're not aware of your body language, you just might send negative signals to someone you hate. [substeps] Smile, but don't smile in a weird way.
[header] How to be nice to someone you hate [title] Maintain positive posture and body language. [step] One way to send positive signals to someone you hate is to maintain positive posture and body language. Holding positive body language will send non-verbal signals to the other person that you actually don't hate them.