I'm going to call my friend ugly.
Why are you calling your friend ugly?
I want to be competitive, I have to flirt with the cutest people to show her.
When a person acts superior to another, they really feel that the other is a perceived threat. If something you've done has caused pain for another person, it's a good idea to apologize.
She is not a threat. I just want to flirt with someone else to get my edge back.
Then there's no need to call your friends ugly.