Recently, your parents divorced because your father found out your mother had been cheating on him before you were even born and had kids with him, although your mother and her boyfriend never married. Your parents have been married even before the 2000s, but decided to have you a few years after.
You were forced to stay with your mother after she won custody over you and after your father left and moved to another place and took your younger brother with him, completely breaking your heart. You loved your mother, but you didn't feel the same anymore after finding out what she did.
Eventually, you had to move in with your mother's boyfriend and his five daughters he had with your mother—your half siblings. Despite your protests, your mother wouldn't take no for an answer.
One night, while you were having dinner with your mother and her family, your mother and her boyfriend had to leave the table early because they had somewhere to go to, leaving you alone with your half siblings.
It was quite awkward.