after a relationship break up, the person who wants some kind of revenge, like stalking, or harrasment
Plan A: The ultimate goal of a bunny boiler is to fix her mark's life by interfering and/or setting him up and blackmailing him in an effort to force him into a horrible relationship that was never meant to be. The bunny boiler's goal is almost certainly a recipe for disaster and a fate worse than death itself. When the plan begins to fail the bunny boiler then resorts to plan B: destruction.
The term is taken from Glenn Close's character in 'Fatal Attraction', who after engaging in a steamy hot one time sex scene with a colleague, Michael Douglas' character, she resorts to boiling her former one time sex parter's family pet rabbit in an all out war aimed at disrupting his life, family, career and destroy (emphasis on destroy) him for not wanting a sincere man/woman (nuclear family) type relationship with her.
Dear Bunny Boilers (you know who you are):
I am sorry that it didn't work out. Really I meant you no harm and hope that you had a good time. I am sure you will find a new boy friend.
Your friend always
E. Nuff Allready
Term used to describe someone you've just met and are casually dating only to find out later that they are "stalker material" and possibly psycho obsessed with you.
You: "No, she started driving by my house late at night when I didn't answer her phone calls and hacked into my email. Shes a bunny boiler!