Agree with Cogito above, I was convinced my STBXH was having a mid life crisis and would come out of it at some point. I wrote him a wonderful letter, telling him how lovely he was, great father, husband etc.
He wrote me a letter detailing all my many many alleged faults, which he had never previously mentioned to me. He threw everything he could at me , to make me feel bad and blame myself for him walking out. Dont let your H do this to you.
Let all your friends know. I spent evenings chatting to friends on facebook or phone, going over and over everything. I have maybe 6 great close friends that were there for me and I owe them everything for keeping me going. and my mum has been fantastic through it all, and my parents cried too, at what it did to my DD when he first walked out.
I got fantastic support on here too. You dont always like what you hear and some of it sounds harsh, but the thing to remember is that the people posting have all been through what you are going through.
Its four months since my H left at Easter. My decree nisi has already been filed (my choice not his, Ive taken back the control). Its still early days for me, but at the same time, I am so much further on in four months that I could ever see at the time that it happened.
Keep posting and you will get great support and please do PM me if you want a private chat. xx