Advice please. Someone I know was married for 19 years. Let's call him Bob. She (let's call her Amy) had an affair a couple of years ago with someone who was also married. Both parties left their spouses and shacked up together. They are still together now although she regrets leaving the marriage and became quite bitter as Bob quite rightly told her to fuck off when she asked to come home. They have one 20 year old son together who has flown the nest, no other dependants. In the final years of the marriage they sold the family home to purchase and live on a boat. No other assets involved. The profit from the house sale was £30k, the boat cost £75k. They used the £30k and Bob's own savings to purchase the boat. It is and always has been in his name only. She willingly left the boat, Bob and their cat a couple of years ago to be with OM. Bob is yearning to divorce, he offered her £15k as a straightforward split without having to appoint expensive lawyers - half of the £30k was hers from the house after all. She said yes fair enough but has now changed her mind since Bob met someone new (not me) and it pissed her off. She asked him for the boat paperwork and proof of what it cost, which alarmed him, then left the area without contact details for 8 months. She's now back in the area but yet to make contact. Poor Bob is absolutely shitting himself that she can and will screw him over financially and that he'll be forced to sell his boat and potentially end up homeless. She was the unfaithful one, he was a good husband but of course lawyers won't give a shit about that. So these are two adults with no assets and no dependent children, surely it should be clean enough to divorce quickly? I assume the best thing he can do is file for divorce on the grounds of her infidelity but I'm no law expert. Any help welcome please?