Troy and I spent thirty-six years building a life together—three children, five grandchildren, and every struggle faced side by side. On our anniversary I gave him a smartwatch with a heart-rate monitor because his doctor had warned him about his heart. A month later he sat me down at our own dining table and asked for a divorce. He had met someone else. The words cut through me. We agreed to keep it quiet from the children until the papers were final. I tried to accept that the story was over.

Three weeks later a notification flashed on my phone. The smartwatch was still synced to me. Severe heart-rate drop. Seek medical attention immediately. I called. No answer. I drove across town in a panic and found Troy lying motionless on the pavement outside his new apartment. As I reached for my phone to call 911, his mistress Alicia appeared, furious. She slapped the phone from my hand, insisted he was fine, and told me to leave because she had “won.” I snatched the phone back, got in my car, and dialed emergency services anyway.

Troy barely survived. The doctor said that if the ambulance had arrived even a few minutes later he would not have made it. When our children and I walked into the hospital room, Troy looked at me with guilt and shame. He admitted he had believed Alicia called for help. The doctor had told him the truth: it was me. Tests also revealed that the intense workout plan Alicia had given him after he rewrote his will to include her was far too strenuous for his heart. Instead of making him stronger, it had nearly killed him.

Troy called himself a fool and asked if I would be his wife again. I said yes—on the condition that he remove Alicia from the will and stop the dangerous training. He agreed without hesitation. The smartwatch I had given him for our anniversary did more than track his pulse. It saved his life and, against every expectation, gave our marriage a second chance.