My Girlfriend's Sister

I am a fitness trainer and for two years I have been with Yiota.

Yiota has a sister, Sofia, 29 years old, two years older than me, tall, slender with big tits who enjoys provoking men by wearing as few clothes as possible during her outings. Naturally, her slutty dressing had excited me to the point that when I fucked my girlfriend, I imagined I was fucking her.

One day we were leaving my girlfriend's sister's house. As we arrived at our place, Yiota remembered she had forgotten her phone. I volunteered to bring it to her and she gave me the keys to Sofia's house because she might be out. Arriving at the apartment, the door was unlocked. I opened it and headed to her room. Upon arriving, I heard male voices: "Do you like it, you little slut? I'll tear your ass so you can't sit for a month." I bent down to look through the keyhole to see what was happening. Sofia was tied face down on the bed and on top of her a fat fifty-year-old was fucking her in the ass. In the room were two others, an Arab and a bodybuilder who were jerking off waiting for their turn. After the fat man finished, he took a belt and started hitting her ass cheeks hard with force. Her ass became bright red while tears streamed from the pain.

He untied her and ordered her to kneel. The Arab came in front of her with his huge cock and shoved it into her mouth. He fucked her mouth with frenzy until soon his cum flooded her mouth. I couldn't bear to watch anymore, I took the phone from the kitchen and left quietly. When I returned to my place I was so turned on by the whole scene that I made my girlfriend give me a blowjob, emptying all my sperm into her throat.

The next day while Yiota was away at work, I visited her sister. "What do you want so early in the morning, I'm horny and I thought maybe you could help me." "How dare you? Outside my house, listen bitch, I saw you yesterday with your clients. It's time your parents learned what a slutty daughter they have." She started begging me, saying she would do anything so it wouldn't be found out. "You will become my personal slave."

"Strip and wait for me on the bed on all fours." She obeyed without saying a word. Needless to say, my cock had turned to stone. I go straight into her ass while I grope her huge tits. After conquering her ass, it was her pussy's turn, and for the end I left her mouth where I left all my cum.

After I finished with her, I call four buddies to come over. "Guys, the slut is my treat," I tell them. "Do whatever you want to her." They came on her like rabid dogs and fucked her until the evening. I forgot to mention that I filmed the whole scene with the camera and whenever I'm horny I watch it and relieve myself.