Oh that is awful.
It is a betrayal which is humiliating and degrading Npanteli.
If you "want to forgive him and stay married" of course you can, but you will have to do heck of a lot of talking and also try to forget what has happened.
I think that may prove to be very difficult. Best wishes to you.
Last weekend, in Rutland, the first statue in Britain of the late Elizabeth II was unveiled.