Kylie's not entirely wrong; Tom is extremely caught up in his own world and is, at this point, uninterested in creating new relationships with his nuclear family. When set next to Tom's growing relationship with Brendan, it suggests that Tom will need to heal with help from outside his family before he'll truly be able to make things right with Kylie, Mum, and Dad. When Kylie calls Tom out on his secretiveness, it reinforces for Tom that he will need to let others in at some point in order to complete this process.