Brother-sister incest: John & sister “became lovers” as adolescents, now expecting child


Genetic sexual attraction can draw siblings into an erotic incestuous relationship.

This narrative, involving another case of consensual sibling incest between a brother and sister, has been drawn from a March 2011 “confessional” by a young man identifying himself as John, age 16, located in Toronto. Submitted in response to a survey on an online incest discussion forum, his narrative, lightly edited to improve orthography and readability, has been posted here because of its research interest and educational value.


About 8 months ago my sister and I became lovers. She and I did a lot of kissing and touching at first, and then we had sex. We would go somewhere and make out for hours.

She just told me she was pregnant, so we have to find a way of telling our mother. Our mom is divorced from our dad 5 years now. I don’t know how she is going to take it.

Sis is 14 and I’m 16. We will wait and see.