Lust of the Flesh (2013)

Anna and Kenneth, a couple without kids, move out to the countryside to give them a fresh start. But the loneliness is getting to them, and Anna feels that she is constantly watched over. Their sex live is also getting more and boring and finally they place an ad in a magazine to find an sex partner and spice up their sex life. But it doesn't turn out as they had planned, as this person doesn't want to have sex with them.