“But people change,” he said quietly. “Precisely. People change. Cultures change. Empires rise and fall. Shit. Geology changes! Every ten years or so, George and I have faced the fact that we have changed and we’ve had to decide if it makes sense to create a new marriage between these two new people.” She flopped back against her chair. “Which is why vows are such a tricky business. Because nothing stays the same forever.