“Hello, darling,” he said, his voice dripping with a sweetness that made my skin crawl. He spoke to her as if I weren’t even there—as if we hadn’t just been tangled together moments ago. “I just got home now.”

I sat there, frozen and naked on the edge of my bed, listening to them talk happily. The contrast was sickening. He sounded like the perfect, attentive husband, while I was nothing more than a secret hidden in the shadows of his real life.

“Come home soon,” I heard Dave say, his eyes locking onto mine with a predatory glint. “I’ll be waiting.”

After ending the call, he put the phone...