Lisa's Date with Density

"Lisa's Date with Density" is the seventh episode of The Simpsons' eighth season. It originally aired on the Fox network in the United States on December 15, 1996. It was written by Mike Scully and directed by Susie Dietter. The episode sees Lisa develop a crush on Nelson Muntz, which eventually leads to Lisa and Nelson dating.

At Springfield Elementary School, Superintendent Chalmers visits Principal Skinner to show off his newly purchased 1979 Honda Accord. However, he becomes distraught when he discovers the car's hood ornament is missing. Principal Skinner orders a search of every student's locker, and it is discovered that Nelson Muntz is the culprit. As punishment, Nelson is forced to return all stolen items to their owners and is sentenced to be a janitor alongside Groundskeeper Willie.

Mr. Largo catches Lisa looking outside at Nelson during a music lesson, and as a result, she is given detention. After school, she continues to watch Nelson and develops a crush on the school bully. Lisa tries to let Nelson know how she feels about him by getting Milhouse to pass a love note to him in class. The plan backfires, with Nelson hurting Milhouse, thinking the note came from him. Lisa confesses that she wrote the letter and although Nelson seems indifferent about the matter, he begins visiting her home. Lisa is resolved to turn Nelson from a trouble maker into a sweet, sensitive young man. Later, Lisa and Nelson share a kiss during their date at the Springfield Observatory.