Caroline Spencer found that out:

After the birth of their son, Ned, Caroline declares herself ecstatic, telling one journalist that every day she feels ‘blessed’.

When asked about the earl’s track record – his previous messy divorce which ended amid accusations that he was a ‘callous adulterer’ – her reply is unequivocal. ‘I can’t think of anyone less callous,’ she says. ‘Strong, determined, all of those things. But never callous.’

Words that must haunt her now. Just two years later, in September 2006, when their daughter, Lara, was four months old, Charles Spencer abruptly left, declaring he needed ‘time and space’. He was soon involved in a very public relationship with an American broadcaster who’d come to interview him months earlier.

Two stone lighter, with shock etched on her face, Caroline retreated to the London home with the children, a home that became her refuge. But anyone expecting the earl to be contrite or conciliatory couldn’t be more mistaken.

And they do mean mistaken.