Germany. A Winter’s Tale (2018)
A dominant girlfriend cuckolds her boyfriend with their co-member in a right-wing terror cell, kissing and sleeping with the co-member while her boyfriend is in the same room or the next room.
Actors: Lars Eidinger
The Bloom of Yesterday (2016)
A husband calls his wife on the phone while she is having sex with another guy in the shower.
Tabu: The Soul Is a Stranger on Earth (2011)
A wife has a sexual love affair with her brother. She then marries her older music professor to dispel rumors about the affair, and then she goes on and screws her brother again and even lets him impregnate her on purpose.