So, off my previous post about this, I have a thing for my soon to be 19 year old sister in-law and I kinda think she has a thing for me too. I turn 29 in August. There's been subtle flirting between us. I recently admitted to her that I had checked her out a few times and I found her attractive and she smiles and got kinda red and seemed surprised but turned on. Anyways, had to go to her place the other day to help her move some furniture. While there she was wearing these tight short shorts with no panties on. I kept staring at her ass and I was beyond horny. I couldn't handle it anymore and I went into her bathroom and saw a pair of her worn panties on the floor and whipped my dick out and started jerking off into them. Rubbing her used panties on my cock got me hard enough to hunt with. I must of been in there for 5 min before she knocked on the door. I had to stop, I put her panties back and "fixed myself". I finished helping her move some stuff and left with the worse case of blue ball ever. I get home, an hour later I go to bed with the wife. We started touching and what seemed like in the blink of an eye she's got my cock in her mouth and she's blowing me. I lasted 2 min lol. Knowing her sisters used panties were just wrapped around my cock and now she's sucking me, I couldn't hold it back. I was still horny after I finished I flipper her over and ate her from behind till she came. What a night haha