Will has the glee pair off to learn to express emotions through ballads. He's uncomfortable when Rachel draws his name and chooses the romantic "Endless Love" as their duet. As she sings, Rachel starts to realize how "super, super cute" her teacher is. Yet Will recognizes the look on her face...
When Quinn's Chastity Ball dress is too tight, her mother Judy quickly fends it off to her quitting Cheerios.
Rachel gifts Will with a gold star-flecked tie to make him think of her. Will confides in Emma that this is similar to a crush by his former student, Suzy Pepper. She too gave him a tie to remember her by. Yet when Will confronted Suzy, she ate a hot pepper in despair that put her into a coma. Will is now worried that Rachel will be too fragile to let down. Emma advises him to sing his feelings to her in his ballad.
Wrapped up in with own problems, Finn cannot perform with his partner Kurt, who harbors a secret crush on Finn. Kurt suggests express his frustrations about the baby through song. That night, Finn's mother catches him singing to a sonogram video. He breaks down and tells her the truth about Quinn's pregnancy.
The next morning, when Quinn argues with Finn about this, Kurt comes to Finn's aide. He thinks Finn's issues have to do with girls. "It's enough to want to give up women all together," Kurt subtly hints. His goal is to help Finn so that he will later cry on Kurt's "shoulder pads."
Emma accompanies Will to rehearsal with Rachel. He sings a mash-up about schoolgirl crushes on teachers, but Rachel doesn't hear the obvious subtext. Watching Will's performance, Emma is just as smitten as the student. She's no help in his sending Rachel a clear message.
Will returns home to find Rachel there. Teri is exploiting Rachel's crush to get the girl to do housework. The next day, Suzy Pepper threatens Rachel to stay away from Will.
Puck confesses to his ballad partner Mercedes that he's really the father of Quinn's baby. She tells him to back off since Quinn chose Finn over him.
At the Fabray house for dinner, Finn starts to panic. He retreats to the bathroom and calls Kurt for moral support. Finn psyches himself up and sings his ballad "(You're) Having My Baby" to Quinn in front of her shocked parents. Quinn accuses her mother Judy of pretending she didn't know. Despite Quinn's pleas, her father Russell won't forgive her and throws her out of the house. Finn brings Quinn home, and his mother allows her to stay as long as she needs.
Suzy Pepper warns Rachel that she won't find her self-esteem in Will. Will confronts Rachel about her inappropriate actions. She agrees and apologizes in tears. Will assures her that someday she will find a boy who loves her.
The glee club surprises Finn and Quinn with "Lean on Me" as their group ballad dedicated to the couple.