Gomer Pyle, U.S.M.C. (1964)

S01E20 Sergeant Carter Get a Dear John Letter

Sergeant Carter is blindsided when he finds out that his girlfriend has ended their relationship, and to his shock, she's chosen Gomer as her new partner. The news leaves Carter reeling as he tries to process the unexpected turn of events. As he navigates his feelings of betrayal and confusion, he must also confront the awkwardness of seeing Gomer, who is blissfully unaware of the turmoil he's caused in Carter's life.