ur an actual idiot, this is a child. obv he didn't like hearing how his dad slept around with women but wanted to comfort his mother as she's labeled as the noble quack lady. he was never OKAY with it, he never had evidence to even confirm it. But once his dad tells his stories and how he never cheated on his mother but then figured out I'M NOT MY DADS SON and found EVIDENCE of his mom being a hoe while married-- well. his reaction is well understood