"But as it stands only 3 people know you're the biological father of the boy, and while it may take all your will power, I think it should remain that way."

Says Prudie, noting that it's only a cousin marriage in the offing and not mentioning the thrilling line in the wedding ceremony — often used for drama in fiction — "Speak now or forever hold your peace." That line is there because of problems like the one raised by the advice seeker.  In fictional stories, it tends to be used to create tension over problems like — spoiler alert! — this:

"When my wife and I met in college, the attraction was immediate, and we quickly became inseparable."

"We had a number of things in common, we came from the same large metropolitan area, and we both wanted to return there after school, so everything was very natural between us. We married soon after graduation, moved back closer to our families, and had three children by the time we were 30. We were both born to lesbians, she to a couple, and me to a single woman."

You see where this is going? Blah blah blah... "I can't help but think 'This is my sister' every time I look at her now...."

"More NYU and Columbia female students or 'sugar babies' are seeking 'sugar daddies' to pay for rising school costs."

"SeekingArrangement.com says NYU was the top school for new sign ups — Columbia is the only Ivy league school to make site's Top 20."

If you'd like all the satisfaction of sending a daughter to college, without that pesky incest taboo, there is a solution for you.