What happened there, likely a result of jealousy and heartbreak, prompted you to act in a way you wouldn’t normally.
You’re so enamored with her that you’d fulfill any of her wishes, yet she didn’t ask; her actions were meant to break your heart.
Apparently, she’s with someone superior to you romantically, a reason you think is quite silly, but she’s adamant.
Consumed by fury, you struggled to comprehend her actions and the petty justification, leading you to seek retribution.
As her punishment, you broke into her home one night and dismembered her while she slept.
After bagging her remains, you put them in the car trunk, torched the house, and then buried her dismembered body across the city.