So sorry this is happening to you, especially so far from home
Please start putting yourself first. His behaviour is disgusting and you owe him nothing
Time to take a deep breath and do what you know you need to
Do not talk to him, it’s too much, too soon
Go home asap, you have a lot to sort out and may as well start now
Take screenshots of everything you can
Get hold of all paperwork relating to:
Bank accounts
Savings
Shares
Pensions
Mortgages
Contact a solicitor
Do not speak to the OW
Message her saying she has 24 hours to tell her husband before you do, but that’s it. He has to know
Tell your family and trusted friends what has happened so they can support you
You can’t control what has happened so far, but you can and will control how you deal with it
Today is shit - but your future without him holds so much more 💪💐