sentences:  Jack's aversion to his family's alcoholism makes him vow never to drink, and tries to save Shawn from it in one episode.However, despite having been raised by his stepfather, Jack had a gambling problema trait he shares with his father, but falls into brief relapse when placing a school bet.Chet continued to visit his sons at Pennbrook and began to reconcile with them before his death, leaving both Jack and Shawn devastated.