Can a bad partner push someone sweet too far?

I got out of a toxic relationship several months ago. He kept mocking me how I'm not ready for a family, how I'll never find someone better than him, started isolating me from my family, etc.

The last thing he said was something like ''I'll just be coming to visit you and that's it, you're not ready''. I was so upset that I replied with an ''How do you even know condoms can protect you. After all accidents can happen. I'll make sure you regret it forever''. All of the sudden, I found myself planning a scheme on him. I've gotten to the point that I wanted to ruin him. I hated him at that moment.

Needless to say he didn't come and it was over the following week. I think I scared him away. I've never thought about doing plots on anyone ever. Can a bad, rotten person push someone sweet too far?
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It's like all of the sudden, this bad side within me showed up. Out of rage for everything he's put me through, I wanted to get back at him.
Can a bad partner push someone sweet too far?
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