Have N/C. I have also posted various times over last year about trying to stop myself returning to [mainly] EA relationship.
I have failed every time and it is destroying my mental health and also my physical health. I have tried so, so, so hard but every time eventually caved and then its all love and romance, and now that doesn't even last a few days before he starts.
I REALLY need some kind of short sharp shock or something! I am hopefully getting some counselling which I hope will help but if anyone can recommend any books, websites, on line resources and what the hell I can do I would be so grateful 
I have done the remove all contact details, make long long lists of all the stuff he has done, written to myself about why i should not go back.....