You're in Love, Charlie Brown (1967)

Plot

As the school year wraps up, Charlie Brown grapples with his infatuation for "The Little Red Haired Girl." Despite his heart's desire, anxiety stifles his courage to approach her directly. Each effort to catch her attention at school ends in comedic disaster. Meanwhile, his friends Linus and Peppermint Patty offer misguided support, only complicating Charlie's attempts to win her over. As he navigates the ups and downs of young love, Charlie Brown remains determined to find a way to connect with the girl of his dreams.