Had to post because June 4th 2 years ago my stbexH announced he just didn't feel like he loved me anymore. Then came the list of why it was all my fault and that our 26 year old marriage (+ 4 kids) was over but he still wanted to be friends. The next 10 days were horrific and led up to me discovering he had a second phone. Then on the morning of my birthday (the 14th) he finally admitted he'd found someone else.
Over the last 23 months I've discovered that he'd been seeing prostitutes/other women loosely and that this woman that he has the new emotional connection to is Thai. He worked in Iraq, hence his ability to hide everything.
I did the pick me dance but he refused to go to counselling and that was where I drew the line! I know he misses the friendship we used to have because one of the first things he said, when I started divorcing him, was his utter disbelief and who was he going to talk to daily as he still considered me his best friend.
I can only say find a solicitor (if you're nearish to London PM me for a recommendation given by a KC), find a therapist for yourself, understand that for him this is not new but he wont get that and will refuse to allow you to grieve.
Finally if he wont leave the family home then leave yourself. It's rubbish about remaining in the property etc, divorce has changed massively. What I would recommend is that you leave him with the kids until he agrees to move out. You will need the time away from them anyway to get your face straight for them. Even if only over a weekend. I did it and our kids are much much older. I went down to my eldest works (she's currently 26) and stayed in a hotel.
That said I didn't have to fight my ex for looking after the kids. You may wish to seek guidance for that.
so repeat again. Therapist and solicitor. Either order, but get both.
My heart goes out to you. I wouldn't go back to that time for anything. In fact I now wish he'd just died. Although not fair on our kids, it would have been much easier to deal with as I would have simply carried on 'talking' to him daily and believing that he always loved me.