If I have an email from H admitting adultery, can I use that?

[Birra]

An email where he apologies for being unfaithful.
Is that enough? I know proof of adultery is hard to prove

In England anyone can get divorced on demand after a year. The only ground is irretrievable breakdown. You can just about always prove that by unreasonable behaviour - no need really to cite adultery unless you particularly want to.

Also people tend to send each other the draft divorce petition in advance if they want a civilised divorce so the other person can comment on and suggest amendments to it - we did that. Works well.

But, the unreasonable behaviour can be refuted. I was thinking the email might make adultery easier.

It is never successfully refuted in England. No one would succeed. The courts always let it through. You could pick any marriage including the happiest in the UK and find enough to found an unreasonable behaviour petition which would stick even if the other person does not consent to it.

Mate of mine was advised not to apportion blame. You dont need to - why make it any worse?