Daily Writing Prompt

He cares about his wife as a lady. He admires her work and her communication skills. He respects her genuine integrity. But he doesn’t love her. There is no passion in their relationship except the rather too frequent outbursts of anger.
He has a girlfriend. She comes from a totally different background and is years younger than he is. He knows what is right and proper and sensible but he has a self-destructive instinct. His secret cannot last much longer. What will he do?