It is as richard says. The court isn't interested in who did what with whom. All it recognises is that the marriage has irretrievably broken down and that one party finds it unreasonable to stay married.
Who is entitled to what of any of the property, be it a house and any other goods and assets or its proceeds, and on what terms is entirely up in the air once the divorce starts. The court has limitless powers. It can transfer one person's property to the other, order the transfer of shares to the other in a company controlled by one, and any and everything else.It's no good complaining that she caused the divorce, the court will award whatever it thinks fit. It's not a court of morals!.Here she might well get 60% but it all depends on information the court will have and we don't.