As Kourtney and Khloe got ready to leave Miami, Scott asked for Kourtney's help through his therapy. When she attempted to be serious with him about his issues, he was a complete dick and oblivious to her emotions.
He tried to apologize later, but Kourtney left anyways. Scott teared up watching her and Mason leave, stating that he will do everything he can to bring their family back together.
[There was a video here]