An older guy lived with his first love for over two years, doing everything they were supposed to do and everything they weren't supposed to do. Later, for some unknown reason, they broke up. A few years later, the girl got married and had a child. One day, he ran into his ex-girlfriend on the street and noticed she was with a child who looked very much like him. At this point, an old saying comes into play, called "First Husband's Genetics."