Dharma & Greg (1997)

S4E23 The End of the Innocence (1)

When Dharma discovers a long-lost love letter from her former college tutor, she insists on dragging Greg to an eccentric couples counselor. However, as she remains hesitant to cut ties with her past flame, Greg decides to take a firm stand. His actions could potentially lead to a serious rift between the two, testing the strength of their already unconventional relationship.