In 2004, Charlotte Kallehauge divorced her husband and began dating another man. On New Years, she slept with her ex-husband, and two days later with her then boyfriend.
It did not occur to her at the time to use contraception, and only several weeks later she received news that she was pregnant with twins. Charlotte attempted to figure out which of the men had gotten her pregnant but was unable to for some time.
It was not until the boys were slightly older that she had a DNA test conducted because they were so different. The results were shocking. One boy was the son of her ex-husband, while the other was the son of her boyfriend! Two eggs had each become pregnant at almost the exact same time, resulting in twins with different fathers!