About this "The Simpsons" episode:
The Simpsons - I Love Lisa is the 15th episode of season 4 and number 74 overall in the series.
It is Valentine's Day in Springfield and everyone in Lisa's class receives a card, except Ralph Wiggum. Out of pity, Lisa quickly writes one up and gives it to him, much to Ralph's delight. Ralph begins to develop an interest in Lisa, but Lisa is not interested. However, she does not know how to get rid of him. Ralph invites her to go to Krusty's 29th Anniversary Special and she reluctantly accepts. During a televised talk session with Krusty, Ralph declares that he loves her and Lisa explodes and declares that she never liked Ralph. Ralph becomes heartbroken. For the President's Day play, Lisa is cast in a role as Martha Washington and to her horror, Ralph gets the role of George Washington. She becomes afraid that Ralph will embarrass her again, but Ralph gives a rousing performance. After the play, Lisa and Ralph decide to just be friends.