I stared at the husband I thought I understood.

The man who kissed my forehead each morning.

The man who had assembled our baby’s crib with his own hands.

The man who cried the first time we heard the heartbeat.

And suddenly, one question drowned out every other thought.

“Mark…”

My voice trembled.

He closed his eyes.

I placed one hand over my stomach.

“What exactly did you do before I became pregnant?”

His eyes opened.

The fear inside them answered me before his mouth ever did.

But when he finally whispered the truth, it was worse than anything I had imagined.

Far worse.

Because the moment he said it, Claire’s phone slipped from her hand.

And I realized that whatever had happened between Mark and Claire might not have been the darkest secret in my marriage.

Not even close.