(Some backstory) For a while, Trixie and Starlight had a relatively good relationship. That is, until Trixie was seeing other ponies behind her back. She eventually caught her and broke up with her. Starlight was very heartbroken, until one day she found one of Twilight’s friends, Moondancer. Starlight found out the same thing had happened to her with Comet. They decided they became good friends, and Moondancer asked if she would pretend to date her to see if Comet would become jealous. They did, but eventually their fake feelings became real, and they began to date for real. 

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Full Name: Stardust Afterglow

Nicknames: Stardust, Starry, Dusty

Gender: Female

Species: Unicorn Special Talent: Experimenting with magic

Parents: Starlight Glimmer and Moondancer