Hi S.,
I know how terribly difficult this is as my situation was very similar years ago. I knew I was no longer "in love" with my husband. We had been through so much and damage was done. We divorced and it was the best thing for both of us. We are still and, hopefully always will be, very good friends. That is so important for the well-being of the children. Also, he didn't want a divorce either and, at the time, actually told me he would never forgive me, etc. You need to do what is best for you and your children. Work hard at keeping things as stable as possible for the kids. I have seen some pretty nasty divorces over the years and the kids are caught in the middle. There will be times you want to argue back but you must tell yourself it is imperative you are the bigger person, etc. If he does not want a divorce, the beginning could be very difficult. There is a thin line between love and hate! Stay away from the pitfalls! Good luck!