Aaron's father in law tells him "Think of this as a good news instead of thinking about that painful memory that made him like this" Aaron just nods his head hearing him. This is something which is easy to say but hard to act upon. Same is the case with him, even though his father in law told him that supressing his pain, he definitely knows that how much he must be hurting from inside. He knows that he is worried about Max as he is like a new born now. But he is just choosing to stay calm and not show his pain unlike him who is showing his pain outside for the first time after Max has gone into coma. He has made sure not to show his pain outside but after Kate has entered his life, he has completely changed an is showing his pain outside just to her without lying or attempting to hide it.
