On Valentine's Day, Lisa feels bad for Ralph and gives him a card.  Ralph mistakes Lisa's pity for love and invites her to Krusty's 29th Anniversary Special.  On national television, Ralph declares his love for Lisa and she publicly humiliates him.  Back at school, in a President's Day play Lisa gets the role of Martha Washington opposite Ralph as George.  She's scared she'll be humiliated again, but Ralph gives a good performance and the two decide to be just friends.