Cheating {Kyalin}

Cheating is bad, on test, on competition, on people... Lin new that, she's know thats since she was young, her mom cheated on her dad with whoever su's dad was causing her father to abandon her. Su's dad didn't stay, so all because of Tophs mistakes Lin grew up with out a father and a mother who threw herself even farther into work once her father left. Cheating ruined her childhood, then why is she doing it on her boyfriend, with his sister......

I saw a head canon for polyamorus Su and fell in love with it so theres a bit of that in here.

This orginaly was a One shot and it only will be one chapter but this is way longer than my oneshots normaly are so I decided to make it in to an individaul story.