Lucy thinks Schroeder is cute; Frieda is at Schroeder's piano; Frieda offers a used Valentine.

Sally gets a love letter; Charlie Brown and Sally have to buy school supplies; Charlie Brown tells Sally to sleep off the bad day; Charlie Brown writes Sally's book report.

Marcie defends herself on the bus. Marcie and Peppermint Patty hear something while they try to sleep at camp; A boy keeps calling Marcie "lambcake" and she does not like it.

Linus gets called mister by Lydia and feels old. Lydia wants Linus to treat her for Valentine's Day; Linus asks for Lydia's address.

Charlie Brown is upset over not being tough; Charlie Brown wants Lucy to mess up while jumping rope; Lucy uses math to solve Charlie Brown's love troubles.

Sally wants Charlie Brown to defend her; Sally gives advice to Charlie Brown on pen-pal writing; A girl thinks Snoopy is Charlie Brown; Charlie Brown buys Valentine's chocolates.

"Pig-Pen" takes Peppermint Patty to a dance. Sally is sad because Linus did not send her a card. Marcie asks Charlie Brown out to a show.

Charlie Brown waits in vain for some Valentine's Day cards. He then makes some Valentine's cards himself. Sally Brown tries to get some other children off a tennis court so that her beloved Linus can play there. Sally later pretends that Linus took her on a date to the movie theater.

While eating lunch, Charlie Brown talks to himself about his unrequited love for the Little Red-Haired Girl. When he notices that the Little Red-Haired Girl is looking in his direction, Charlie Brown becomes extremely embarrassed and puts his paper sack over his head. With the paper sack covering his face, Charlie Brown continues to talk about how sad he is that the Little Red-Haired Girl does not even know him, much to Linus' disgust. Linus berates his friend for feeling sorry for himself instead of simply introducing himself to the Little Red-Haired Girl. Charlie Brown decides that Linus is right. He goes over to sit on the same bench as the Little Red-Haired Girl. Unfortunately for Charlie Brown, he is only brave enough to sit on the bench after the Little Red-Haired Girl has left.

Schroeder tries to play the piano but is interrupted by Snoopy. Marcie and Peppermint Patty go to a concert. Lucy tells Schroeder that their relationship is over.

Charlie Brown just wants to be loved, and feel less depressed, but with a therapist like Lucy, it will not be easy. Peppermint Patty would like Charlie Brown to tell her about love, but is he the right person for that?

Lucy suggests whistling to cure Charlie Brown's sadness; Lucy wants to sulk in her beanbag chair; Sally's date with Linus does not go as planned.

Peppermint Patty asks Charlie Brown if she is beautiful; Peppermint Patty is convinced she got an F because of her big nose; Charlie Brown does not understand Peppermint Patty's conversation. Peppermint Patty and Lucy are going to get their ears pierced, but, during Peppermint Patty's turn, Lucy runs away.

Peppermint Patty does not understand love and wants Charlie Brown to explain it to her. Lucy insists to Schroeder that flowers mean true love. Lucy tries to help Charlie Brown understand the equation of love. Lucy wants to know if Schroeder will love her when she is old and crabby. Lucy imagines a married life with Schroeder. Note: This Episode Aired Five Months After Its Sister Episode.

Lucy sings about money at her psychiatry booth. Schroeder plays his piano accompanied by Woodstock and Snoopy. Schroeder plays his piano and Lucy interrupts. Lucy sits at Schroeder's piano and talks about love. Snoopy dances despite Lucy's despair.

Lucy tries to get Linus to give up his blanket. Linus and Snoopy get slivers and Lucy helps. Linus gets excited about Miss Othmar's return and gets upset about teachers getting paid to teach. Sally tries to woo Linus over lunch.

Linus thinks Miss Othmar likes him. Linus becomes convinced Miss Othmar does not like him. Linus is asked to help in class. Linus cannot believe teachers get paid to teach.

Charlie Brown and Linus talk about love problems. Charlie Brown asks Linus to play matchmaker between him and the Little Red-Haired Girl. Charlie Brown flirts unsuccessfully with the Little Red-Haired Girl. The Little Red-Haired Girl moves away from the neighborhood.