Coming In 1997 one on netflix

Copywriter Lorenz is gay and has a relationship with his boss Adrian. The two are happy together until Lorenz meets secretary Nina one day. Nina has just been abandoned by her husband Kai, who is now with a man. Lorenz also suddenly develops new, unknown feelings. He falls in love with Nina, a woman. Of course, he does everything he can to keep that from Adrian. But that does not hide Lorenz’s emotional chaos.