: "How to Keep Friends When You Have BPD" (S4E3) focuses on how interpersonal boundaries are navigated within friendships for those with Borderline Personality Disorder.
: The family decides to go out for the night, leaving Penelope home alone. Her son, Alex, returns early to retrieve his phone and accidentally walks in on her during a private moment (masturbating), leading to extreme awkwardness.
If you are referring to a podcast or a different series, here are other notable "S4E3" titles focusing on boundaries: :