How can I keep the boundary

[Lattelight]

I have been separated for two years and divorced for 6 months. (I left the marriage)

Every 4/6 weeks my ex starts sending messages stating, what a terrible partner I was in the marriage, how much happier their current partner makes them (things they do together) trying to demand answers about the breakdown of the marriage, sometimes bringing my new partner into the messages and generally causing unwanted stress.

We share children together and the majority of the time we message very little or it is about the children.

I am happily with someone else and wondering if and how I can stop these unwarranted messages. I normally either not respond (though when they start they are over the course of a couple of days) or I ask them to please not send me messages like this. On the occasions I have tried to respond it has caused more aggressive messages.

Can I do anything or is this something which hopefully will eventually stop?

My ex used to send me drunken, abusive texts 15 years after we split up. At the time my phone was provided by the NHS (before smartphones, think the old Nokia types). After receiving a barrage of abusive texts one night I followed this up with something like. "This is an NHS number and the courts take a very dim view of harassment of NHS staff, do not contact me again". The texts stopped instantly. Threaten him with the law.

"Every 4/6 weeks my ex starts sending messages stating, what a terrible partner I was in the marriage, how much happier their current partner makes them (things they do together) trying to demand answers about the breakdown of the marriage"

I think I can say with absolute certainty that he is clearly not happy otherwise he wouldn't be regularly thinking about your relationship and texting you trying to analyse something which ended 2 years ago!!!

There was no leaping. It was a question, not an accusation.

Stop communicating with him

All communication goes through a third party who then passes on messages regarding the kids

My friend does this and uses her mum as the communication filter but you could used any friend or even a secretary service

Or email

Keep records of all messages and block him

Or another thing us to get cheap burner phone that you keep just for communication with him and only look at it at at set times so it's less intrusive

If he was so happy in his new relationship he wouldn't feel the need to try and convince you of that or ask questions about why the marriage broke down. If you were such a bad partner why would he care about why the marriage broke down? Surely he'd just be glad to be shot of such a terrible partner. Just ignore him. He's just trying to get under your skin.

Just continue to ignore the messages, he'll get bored eventually.

How old are the children?