After reading more of your responses, it time to seek out legal advice.
As I mentioned before, my ex H did this exact same thing to me twice.
He said the exact same manipulative gaslighting things he's said to you. About not letting him have any friends, etc.
Even said he was suicidal after I finally blew up and shouted at him.
Yeah, poor petal suicidal from being told off one time, but fuck all his emotional abuse towards me for months he was conducting the online affair.
She finally stopped talking to him after she got a new boyfriend.
I really should have divorced him then.
Then 2 years later, I caught him again.
Another online affair with someone in SEA.
That was it. I kicked him out, filed for divorce and never looked back.
Oh and he never did end up meeting her. He lives in a bedsit somewhere probably still living an online life.
He's disrespecting you and basically laughing in your face with his affair.
Please seek legal advice to see what your rights are.