The Too Young to Be Bitter Club is one of the many clubs at McKinley. It is a remedial group for young people who have been left feeling bitter and dissatisfied, mostly with their romantic personal lives. Tina was the leader of the club. It made its début in Sadie Hawkins, the eleventh episode of Season Four, and its final appearance in Love, Love, Love.
The club discusses the Sadie Hawkins dance and how they're losers and will be rejected. At the Sadie Hawkins dance, the group (except for Becky, who is dancing with her boyfriend, Jason and Tina, who is dancing with Blaine) sits down until Beiste encourages them to use their powers and ask who they want. They end up dancing with the person they wanted to ask. Dottie dances with Brett, Lauren dances with Joe and Sugar dances with Artie. At the end of the episode, Tina officially disbands the club since they had a blast at the Sadie Hawkins dance. The group thanks Tina and starts to do a victory dance.
Blaine is concerned about Tina and the person she has become after being dumped by Artie and Mike in the past (even though it was actually her who dumped Artie). He mentions that he saw her alone in the Too Young to Be Bitter club, eating all the food by herself.