My SIL caught me masturbating and I made her orgasm

So, for context, my wife is a heavy sleeper. Her and her sister (I’ll call her Jane) are really close, and early on, my wife had accidentally shared some pictures with her and was rather talkative to her about our sex life. My wife and I are 31 and 32, her sister is 28. Well, we shared an Airbnb with her side of the family one night and we were told she may need the extra bed in our room. The night went on, my wife and I slept and my SIL, we’ll call her Sarah, stayed up downstairs so I assumed she wasn’t going to need the bed. The room was small, illuminated by the alarm clock red light but had our queen bed and a double.

Laying there in bed, feeling especially horny, my cock began to press against my underwear as I laid in bed thinking of my wife. I made my way to the attached bathroom and continued, took some time, then made it back to bed, still stroking myself.

I laid back, had the blanket at my ankles and was slowly stroking myself cock. Then, in the “empty” bed in the room I heard an exhale. I froze.

Sarah must have actually come in while I was in the bathroom and got into the other bed. I sat, frozen with my cock in hand, illuminated by the glow of the alarm clock. But, realizing I may have been caught, I found myself continuing to stroke, my cock even harder. I heard an exhale again, and blankets moving from her bed.

So, a bit faster, I moved my hand up and down my cock slowly. Hearing her exhale, I heard the blankets shift. I looked over, in the glow and could make out her bare legs, open, a hand between them moving.

Holy fuck, my cock throbbed. Her hand moved more, and I could hardly hold myself back. I stood up, slowly to not wake my wife. I took a few steps over and she reached, grabbing my hand and pulling. Then, as I got close, her other hand wrapped around my cock. She pulled, squeezing me and feeling my throbbing cock fill her hand, hardly able to hold it all.

She exhaled and I lowered my body, sliding a hand behind her neck I whispered “be a good girl and stay quiet.” She gasped, and I slid down, meeting her hand and pressing my fingers to meet her wetness. She let out another gasp and immediately my fingers were soaked. I put my hands in her thighs and kissed down, slowly along her soft skin until my lips found what they wanted.

I could feel her warmth, her hips shifted and she was needy, eager. I kissed the sides of her pussy, teasing before gliding my tongue along her wet lips, she gasped and I pressed my tongue in. She was sweet, I salivated.

I worked up, and down, circling her clit slowly, lightly sucking it as she moved her hips into me. She grabbed my head and drove my face deeper. I sucked, licked her juices and covered my mouth. I reached up and put my hand, holding her tit, massaging her nipple.

We kept at it, and she pressed harder, I sucked and drove my fingers inside her, sending one all the way back and in..She gasped. I felt her pussy relax and my mouth was covered in her juice. It drove me wild. She shivered there, rubbing my face and clenching her thighs, then frantically pulling me up and grabbing my cock. Thrusting me into her mouth she worked my thick shaft while she sucked, driving me wild. Already close to the edge I couldn’t help it and quickly felt my body build, tense and release hot cum into her mouth with so much force. She gagged a bit before swelling down, licking me clean..