Answer
Yes, Fossmo's case was marked by a love triangle dynamic. At its core was the relationship between Fossmo, his wife Heidi Fjellheim Fossmo, and Fossmo's mistress Kristin Kirkemo. The intricate web of emotions, jealousy, and betrayal among these individuals played a significant role in the events leading up to the disappearance of Heidi and the subsequent murder trial of Fossmo.