I know you are feeling hurt and in need of validation for all you have discovered and put up
Unfortunately it sounds from what you say that your partner doesn’t want to stop, and the addiction is probably much bigger than you know.
so much gets hidden for all sorts of reasons. You have to just accept that you will probably never know the whole truth it’s just the nature of the beast and it is so distressing.
The addiction will carry on wether you are sat at home stressed out waiting to pick up the pieces or have moved on and picked up the threads of your own life.
I think you need space
Reset your boundaries and stick to them.
It’s not just the addict that has to heal from the fallout
Sometimes the addiction is just bigger than ‘you’ and it’s hard but you will recover and you will realise you are right.
Only when someone is ready will they move forward
You cannot make them change it’s the hardest fact of addiction