look up any word, like ratchet:
Romance between brother and sister. It happens more often then you think. And when it does it is often intense.
It is a myth that all incest involves a parent or other adult raping a kid. When in fact most incest is consensual and between teens and/or "adults".
John and Kathy have a brother sister romance.
by Deep blue 2012 May 16, 2010