So what if...
And what if they were raised by two separate adoptive sets of parents.
And what if they grew up into young adults and met one another later on in life.
And what if they were attracted to each other, and fell in love.
And what if they had a big wedding and were in love and life was great.
And what if one of the two wanted to find her biological parents, and her search led her to know she had a brother out there.
And what if she were told that her brother had been tracked down and that he had the same name as her new husband.
And what if they both learned that they were originally brother and sister.
How many counselling sessions would it take to get them to be even near normal again?
(Yes. It happened.)