Any way you look at it, the manner in which you told me that you'd leave your window open was nothing less than a challenge. A taunt. A dare. You knew exactly what you were doing when you said it, didn't you? You thought I wouldn't. You thought I couldn't. I would demonstrate your error, presently.
It was two in the morning and it was chilly, but as I eased my Challenger's door closed, it was my thoughts that were keeping me warm. The reaction you would have, the sounds you were going to make for me, the perversion of taking another man's woman and making her my own for a few hours... I was on a full boil. I knew you were going out with friends later, and that was part of it as well.
True to your word, your window was open and I slipped through it. I wasn't going to need my clothes, so I stripped and left a neat pile there by the window. I stopped for a moment to fondle my full balls and cock, slowly working my hand up and down the shaft as I thought about your lips and the color of your nipples through a sheer black bra. After a moment, I slipped the jelly cock ring down to the base of my semi hard cock and groaned softly as it began constricting the blood flow, bringing an ache to my groin. By the time I found my way to your room, I was impossibly hard.
I carefully entered your bedroom and watched you sleep for a moment before I ever so slowly began tugging the covers down the bed. Your body was revealed to me in the moonlight shining into your room, providing me with a black and white striped tease of my very own design. My cock bobbed as I involuntarily clenched from the thought of what I was about to do.