My husband and I have been married for 9 years, we have two children aged 4 and 2. Things broke down about three years ago because of his mental illness. Two years ago he had a relationship with a woman whilst I was pregnant with baby number 2 but he never admitted that. He ever since has been very abusive with his language and every time we argue he is very verbally violent so in January I was going to file for Divorce on the ground of unreasonable behavior as suggested by a lawyer I met for the first consultation.
However...
Last night I have accessed his whatsapp, I found a very hot conversation with a girl in which he described with a lot of particulars when he had sex with the woman two years ago. I have emailed myself the conversation so it is safe in my account. Is it a proof of adultery? Do I need to confront him and get him to confess as well? What would you do? Would you record the conversation?
I need your help as I am furious and I know that divorce on the ground of adultery is even more favorable for me!
Please help, I will be greatful