Revenge

So my gf had to work in another town for a week and I got out on a project close to home but had a hotel anyways. Back story is this sister always gets in between us, or shit talks me behind my back. But we needed someone to house sit for us. But I even caught her in our door bell camera as she’s having a smoke talking behind my back to the gf. My gf was having drinks in her room telling me how horny she’s been last few days. Started telling me her sister was drunk at our house and might be talking to my buddy I used to work with. Saying she wants to hook up with him. I told my gf to prove what she’s saying and she sent a screen shot of her sister giving him a time to come over and she’d shut off the door camera. And she’s so drunk she will put on a blind fold and let him do as he pleases. I was kinda upset she thinks she can do and say what she wants. So I did the regrettable action of messaging my buddy and telling him I needed help fixing my truck down a back road. Which he replied right away saying hell yeah. Now I may regret this forever but the best damn revenge I’ve ever had was when I went to my own house hoping my gf sister was wearing the clothes I saw her in every morning at our house. A t shirt with booty shorts and and a green thong that she would hike up her hips when my gf would leave in the mornings. Possibly to get my attention. I swear she wore the same panties or had multiple pairs of same colour. It was like an adrenaline rush walking into the house and going to our spare room where she’d been sleeping visiting and house sitting. I opened her her and just a dirty empty bed, now I panicked thinking she was waiting nor blind folded but walking around house. Then I cracked my bedroom door and their my gf sister was blind folded wearing black spandex pants with that damn green thong riding her hips and a button up plaque shirt. She was blind folded and Jesus I was hard she looked like a complete slut. I wasted no time I kissed her a few times leaning over, unbuttoned her shirt and her tits popped out with no bra. I sucked her nipples and rubbed her pussy through her clothes. I could hear her get wet through her pants. I slid my hand down her pants and again wasted no time getting a couple fingers in her so I could taste that pussy on my fingers. I flipped her over pulling down her pants and bending her over my bed and sliding in hard and fast. I went as hard and fast as I could listening to her asking if I had a condom on. I said nothing hearing my balls slap against her body I cummed pretty quick. I stayed in her till I went soft pulling out and smacking her ass as a good job gesture. I pulled my pants on and quickly left the house pretending to get the water she asked for laying on bed. Now I will wait and see what happens could be bad or good if anyone catches on….