The separation of his parents left a massive impact on him. Sara thought Max felt abandoned, unheard, and angry as a result of the separation. This caused him to misbehave and be very aggressive.
He told Jo that he had asked John why he left, and he would answer. Max just really wanted to know why his family wasn't together anymore. When Jo asked Max what he'd like her to help with, he asked Jo to talk to his dad and get him to come back home, because Max missed him. Jo said her heart broke a little when he said that.
He was 7 years old and is now 16 in 2017.
"SHUT UP! SHUT UP! ARUGH I HATE YOU!"