If you are seeking a professionally produced German-language film about a summer love triangle from around 2016, consider these legitimate alternatives:
Jackie and Martin are a long-term couple moving to Munich. Their stable relationship is tested when they meet Serge, a charismatic Frenchman who introduces the idea of a "ménage à trois" (a three-way relationship). Eine Sommerliebe Zu Dritt 2016 Ok.ru
Eine Sommerliebe zu Dritt (2016) is a German romantic comedy-drama directed by Nana Neul that explores a ménage à trois dynamic when a couple's stable relationship is disrupted by a charismatic third person. The film subverts traditional infidelity tropes, focusing on the nuanced emotional bonds between all three characters rather than making one a villain. If you are seeking a professionally produced German-language