Bill grouses over being dragged to dinner to meet Linda's new boyfriend, Eric, but Bill and Eric have so many interests and past histories in common that they hit it off and become best pals. This presents Bill a dilemma after Linda catches Eric in the shower with another woman and breaks up with him. Bill wants to continue hanging out with Eric, but Judy says he should be supportive of family and not. Bill continues his friendship with Eric on the sly. Eventually, Bill catches Eric cheating on their friendship with another man. He can't tell Judy about it as he's told her he's been staying late at work every night doing inventory, so he turns to Brian for support, seeking answers and emotional support through hypothetical questions that Brian doesn't fully understand. Linda and Eric then reconcile and get back together, but Bill will have none of it. Judy can't understand Bill's reaction till she finds out the two have been conducting a secret friendship behind her back. She's angry about being deceived but then accidentally reveals her own deception at skipping out on a potty class with Linda to watch a hockey game.
—statmanjeff