I've been in an increasingly EA relationship for years.
The final straw came at Xmas.
He then announced he was making plans to leave - he hasn't.
I have seen a solicitor and a letter is waiting to be sent to him at the beginning of July (a couple of reasons I needed to wait).
We own our home (no mortgage), we have savings (more in his name than mine), I am the main breadwinner and support my H. Nominally he works p/t and is SAHD but aside from childcare he provides little for his family.
He has told me it will get nasty and that he has "things on me". Solicitor told me this is the usual response from someone like that.
Anyway, that's it.