Drei sind einer zuviel (1977)

Charlotte is a traveling sales rep for her uncle's pottery. On her travels she meets the attractive young teacher Peter and his equally young and attractive landlord Benedikt. Charlotte becomes friends with the two men, and whenever she is in their area calls in for a visit. As time goes by, both men fall for her. Charlotte is fond of them both and initially tries to be friends with the two of them, but it becomes increasingly clear that she will eventually have to decide between them.