@Clarrie59 Im sorry I should have added my disclaimer that I could of course be totally wrong - I meant to. Of course you do what you have to, but Im also saying you do what you need to for YOU. As in you deserve better.
I know you have self respect, you have been very dignified about all of this & very measured even though you must be feeling shattered.
You are of course right to make no sudden moves right now. Talk to the solicitor (hopefully a SHL) & get everything wrapped up properly. Agree with the PP saying he would hide some - cheating & lying about money are the same kind of thing.
Hes a real shit though. Someone (a man) once said to me 'Pay no attention to what they say look only at what they do. Really hard advice to follow but 1 million percent correct. His actions are cold, really awful.
Im still boggled by why he thought it was ok to tell you all of this TBH. Im guessing perhaps he wants you to leave/be the bad guy? Very confusing for you. Its a common trick, be so awful she has to split up with you. And hes 'lost' the woman hes 'in love' with which means hes very unhappy - but theres only you to take it out on.
But divorce equals him doing child care & splitting assets. All the wealthy men I know would rather walk on hot coals than 'give away half of 'their' assets. So he doesnt want that even though he doesnt want you.
Anyway hard as this is you will get through it, with the help of a good solicitor (the not disadvantaging the children comment!?), minimal contact once this is done & you will meet someone decent - impossible as it sounds right now.
And he can stick his 'happy, & jolly' up his arse.