Jerked off by your horny young stepniece - Taboo Handjobs

my wife cheated on me with my best friend and left me about 6 months ago fortunately for me i have a very supportive family especially my stepsister and her husband they have an 18 year old stepdaughter who is always getting into trouble we have this repoire with one another but lately shes been a lot flirtier with me than usual she has a little crush on me i think during a family picnic once a bunch of us were horsing around in the lake when the next thing i knew there my stepniece was bumping up against me a little too often i couldnt help but get a hardon with the way she kept accidently bumping her ass or her hand up against the front of my tented swim trunks