What's the harshest way you've ever broken up with someone?

Girlfriend became angry over something meaningless and stormed out of my place at 2Am... didn't hear from her in two months.... she showed up late one night at my work late at night to give me a ride home.... once back at my place she took a shower and shaved her legs and put on lingerie... then she came to bed and said she was tired and just wanted to sleep... I told her my house isn't a hotel.... I was angry that she'd tease me... I had no idea what she'd done the past two months but denying me sex after following me home late at night and feigning an encounter would occur by preping and then coming to bed like that was too much... she was yelling at me but I remained calm as I gathered what items she had left in my place throwing them
In a box.... I threw the box outside my place... the contents exploded in the courtyard... I told her to get out..she left crying and didn't return... she still texts me 4 months later... wants to meet up... I'm just so done with her.