[MF] – Sister In Law

/TL;DR AT THE BOTTOM/

So I see a lot more sister in law posts but I want to know if it’s real. Anyone take action? Results? Are we mental and just pervs??

Here’s my story and how it began. This dates way back to my middle school days. She used to tan in the backyard topless and the family made jokes about helicopters flying over and over to get a free peep at her. Thus began my interest towards her. That was the first incident where I tried to sneak a peak at her topless.

Second incident wasn’t too long after it was Christmas. My brother in laws family likes to celebrate bright and early and I have hard time sleeping to begin with but middle of the night I can hear some moaning and I began to investigate. To my surprise it was my sister and brother in law just having sex and after they finished the SIL began to masturbate.