Nekromantik (1988)

Sharing a mutual fascination for the dead and the macabre, Berlin misfits Betty and Robert are about to broaden their horizons when Rob takes a job as a cleaner at an aftermath clean-up agency. Now, nothing can stop them. And as the obsessed new employee gradually amasses a rich and grotesque collection of severed limbs and human organs right under everyone's noses, the couple's dreams will finally come true when Rob brings home an unexpected gift to impress his girlfriend: a putrid cadaver that's hers to keep. However, as one thing leads to another and Betty grows increasingly fond of her silent decomposing companion, the question arises. Can Robert handle this bizarre ménage à trois?—Nick Riganas