Have you ever tried to ruined a ex partner new relationship if so how and why?

Anonymous
So my ex girlfriend of 8 years left me on my birthday because I didn’t want a shot gun wedding and told her I want to talk about it first in person. I was very upset about this as I had brought her a ring and had planned to pop the question in person which I did we made out she seemed confused.. she kept cheating on the new guy with me the whole time she was with him. So the day before the wedding I sent her all her stuff back but send her a long message saying to bring it all to our wedding which she didn’t read and had thought I was done with her so she didn’t show up since she was upset.

She ended up ghosting me 2 weeks later promise to pay me back half the money for the wedding but never did. I got super annoyed with being lead on so I sent the new guy all the text messages our marriage license and our sex tapes we made while she was with him. I have zero idea if she still with him or not but if she is tm makes 3 months since she’s been with him and she cheated on him the first 2 n half months.

Have you ever done anything like this to a ex partner? The guy was also unaware we had a child
Have you ever tried to ruined a ex partner new relationship if so how and why?
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