The problem is how can you possibly do that?
For a start think about the impact on their children?
Let's rehabilitate Dad's reputation with a targeted PR offensive at the expense of Mum...
Or H seeks redemption and a road back by throwing M under the bus?
Whatever conclusions people want to draw here there are two young children who don't deserve to become collateral damage.
That includes their parents separating.
I think the only way forward for H&M is for them to admit they made some (many) errors of judgement during a very difficult/emotional time.
To say they have reflected and wish they had handled things differently.
Then demonstrate through actions over time that this is a genuine sentiment.
I've never blamed them for wanting to forge a different life. I don't hate them - why would I? It's a strong emotion/sentiment for people I've never met (if anything I feel frustrated by the opportunity they wasted and disappointment in respect of their hypocrisy and treatment of others).
But I am entitled to have a view on their behaviours - the same as for anyone who chooses to be in the public eye and especially so for people whose platform has been secured by British Institutions and the British Taxpayer and seek to monetise that.