You shouldn't stalk your ex.
Jenna's boyfriend broke up with her and started dating someone else immediately.
Jenna wants to get revenge on her boyfriend.
Jenna tells all their mutual friends that her ex had a tiny penis.
Jenna starts showing up outside her ex's bedroom window and playing black metal music.
Jenna's ex posts an unhinged rant on Facebook in response that makes him look nuts.
Jenna's ex calls the police and eventually gets a restraining order against her.