My husband, Ray, secretly hired a young nanny while I was at work all day. One afternoon, my little son whispered, “Nanny let Daddy kiss her lips.” When I confronted Ray, he laughed it off as our son’s imagination. Still uneasy, I hid a camera in the house.

The next day, I watched the footage with my heart pounding. Ray suddenly collapsed, and the nanny rushed to catch him before he hit the floor. She tilted his chin, gave rescue breaths, and moments later he gasped back to consciousness. My son had only seen their lips touch and thought it was a kiss.

That evening, I sat Ray down and showed him what I had seen. His face fell as he admitted the truth. He had been suffering from severe vasovagal syncope, a condition that caused his heart rate and blood pressure to drop suddenly, leaving him unconscious and barely breathing.

Ray confessed he had quietly hired the nanny because she was a nursing student trained to respond to his medical episodes. He didn’t tell me because he didn’t want me to worry while I was working. The woman I had feared was having an affair with my husband had actually been the person who had saved his life more than once.