Betrayal in relationships is one of those things that feels like a punch to the gut, and when it involves someone marrying their supposed enemy afterward, it just adds layers of confusion. From my own observations in fiction and real-life anecdotes, sometimes people chase what they can't have or what challenges them. Maybe your fiancé saw this 'enemy' as someone who pushed them emotionally, creating a twisted sense of attraction. In stories like 'Gone Girl' or even classic dramas, the line between hate and obsession blurs—people mistake intensity for love. It could also be a power move, a way to 'win' by turning rivalry into possession.
What hurts the most is the lack of closure. You deserved honesty, not this messy aftermath. I’ve seen friends spiral trying to decode similar situations, but the truth is, some actions are about the other person’s unresolved issues, not your worth. Focus on the fact that you dodged a lifetime of unpredictability. The way someone exits your life tells you everything—no one stable swaps betrayal for a wedding ring without some deep-seated chaos going on.