yeah. the feeling sad bit hurts so much doesn't it. I could not sympathise more.
I am writing tho because I believe you are at risk of being taken to the cleaners. Two ways - financially and in your children's affections. Don't give your wife a free pass on anything. Anything not true she says - counter it. Don't leave the house and don't give in on custody - fight. No decisions until you're ready to make them. You're in shock, she's had years to think about this moment. Fight back. Put one foot in front of the other, don't give up don't let her call the shots, you know what's best for the children. Please don't think she is going to be nice. It's just not likely to be the truth of it.
And please, check your finances. My ex had already started siphoning money into a separate account long before I even knew we were heading for divorce. ZsaZsa Gabor said 'dahlink, you don't know the man you married til you divorce him' she is right. your view of who your wife is will change as the rose-coloured glasses come off. Stand your ground. Take your time. Trust yourself, you know what to do. Wishing you all the best, I know how unbearable it feels, it will get better in a little while, promise. Lily