Zena's Honeymoon (S05E11)
Zena arrives at the garage to share the news that she’s getting married, asking the group to inform Louie that she’d like to talk to him. When they relay the message, Louie jumps to the conclusion that she wants to rekindle their romance and agrees to meet her for dinner. He’s devastated when Zena reveals her engagement and invites him to the wedding, prompting him to lash out at her. While the rest of the group attends the wedding, Louie regrets his decision and decides to crash their honeymoon cruise. Zena and her new husband are taken aback by his arrival, and before Louie can express his congratulations, he impulsively starts to choke the husband. After regaining his composure, he finally conveys his best wishes, leaving Zena visibly moved.