Last night, The Secret Lives of Women featured a young engaged couple who seemed like two clean-cut, completely normal kids — except for the fact that Kyle's dad and Kari's mom are siblings, making them first cousins. In the clip above, they describe what it's like to fall for your future spouse during childhood Christmases at Grandma's house. Kyle and Kari say that genetics shouldn't keep them from being together or even having a family, since their risk of having a child with a genetic problem is about the same as that of a woman over 40. In other countries, as many as 20-50% of marriages are between close relatives, so why is loving your cousin so taboo in America?