Not really an AIBU thread, but it arose from one, so most of the contributors of the original thread (AIBU to refuse to stop receiving maintenance) will be in this area
This will offend some people! But it’s anonymous on the internet, and even though the topic or circumstances aren’t light-hearted, I though we could have a giggle and try to see some humour in the pain that we once had!
To be clear, I am not proud of what I did, I handled the break-up very badly, I have never badmouthed my Ex to our DC, but at the time of the break-up (several years ago) I did everything I could to make his life a misery. I will spend the rest of my life secretly making up to my children for not being a bit stronger or more resilient and rising above it.
Basically .... what was your awful break-up or revenge story?
My Ex cheated (a lot!) and when it finally became too much for me to deny it and look the other way, he left me for one of the OW
I was heartbroken and debt-ridden with young children and he gave no financial support at all
In my case, I used his credit card to pay for the outstanding bills - council tax, water, electricity etc. Then after a torrent of abusive emails and texts about how I had “let myself go”, was a crap mum with mental health issues, Ex one day stupidly forwarded me an email in error which one of his OW had written, pretending to be him (for him to send me from his account), again listing all my faults. As the OW sent it from her work account to his work account, I saw red and sent it to both their companies HR Depts claiming they were vicariously liable for their employees’ harassment. They both got suspended and disciplined, his sister tore me apart on social media, so I sent the email to his friends and family also
Obviously I was just as bad in replying with vindictive texts and just as nasty, but he cheated, so I felt justified 
Told you I was bad!