Girl from the Future

My wife is 70 years younger than me. 2118, USA. Dean lost his wife in a car accident. When he hears of a man who disappeared without a trace thanks to a Time Paradox, he makes a plan to pass painlessly and join his wife. And so, Dean travels 50 years into the future. He meets a woman there. She looks shocked to see him. "Are you..?" (Source: Manta)