Archie and Geraldine

Despite being teacher and student, Geraldine and Archie engaged in an illicit affair. They broke up after Jason Blossom's death.

History
Archie first encountered Ms. Grundy when he spent the summer before his sophomore year working at his father's company, Andrew's Construction. This proved to be a defining summer for Archie, as he embarked on an illicit affair with his music teacher Geraldine Grundy.

Archie and Geraldine were at the river on July 4, at the time a gunshot was heard in the area. They later discovered that his fellow student Jason Blossom had died under mysterious circumstances. Fearful that their relationship would be discovered, they promised each other that they wouldn't tell anyone about what they'd heard that morning, in order to keep their relationship a secret.