Dharma & Greg (1997)

S4E24 The End of the Innocence (2)

When Greg discovers Dharma casually spending time with her former college tutor and unsuccessful love interest, Charlie, his anger drives him to leave. However, the situation escalates as both find themselves involved in organizing their friends' upcoming wedding, prompting Greg to reconsider the state of his own tumultuous marriage. Just as he begins to gain clarity about his feelings, he realizes it might be too late to act on his revelations.