She let out a light gasp when my fingertips traced the underside of her big tits. I almost immediately withdrew my hand, fearing that I had finally gone too far. Still, Lena began gently moving her legs, rubbing her thighs along my erection as encouragement (at least, I thought that was what it was) for me to continue.

I curled my fingers so that my thumb rested on Lena's smooth flat stomach, and my index and middle fingers cupped the bottom curve of Lena's big tits. I was breathing heavily by now, and I was sure Luke and Lena could hear my heavy breathing over the sounds of the movie playing in the background, but I was lost in the taboo thrill of groping her to care.