Taking advantage of my sister-in-law's kindness, I pressed my lips against hers and ran my fingers down her lower body, and her pussy was soaking wet. I had no choice but to cum. I rubbed my cock against her and finally inserted it, but my sister-in-law resisted at first, but before I knew it, she was shaking her hips... This grinding, her clinging flesh, and her squeezing me tightly were sure to make me explode!