You shouldn't take your parent's lifestyle decisions personally
Brad's parents decided to divorce, because his mom fell in love with another woman.
Brad wanted to say something to his mom.
Brad tells his mom that he's proud that she's found someone that she truly loves.
Brad tells his mom that he feels betrayed by her.
Brad's mom is elated that Brad supports her and feels that she made the right decision.
Brad's mom's feelings are hurt, and she begins to feel guilty.