Good son: tell your mom about him cheating on her
From Create Your Own Story
You tell your mom about your father cheating on her.
"Oh that´s fine," she says. "I already know about that. I always knew about his gay tendencies and let him have some fun. Don´t worry about it."
You ask her if she is having sex with other people too.
"haha! Maybe... I won´t tell you about my sex life son!" she answers.
You go back to your room. Seems like your parents have a really weird relationship.