I was unfaithful to my husband.

My name is Leticia and I'm 22 years old. It's been two years since I've been married to Fernando and our marriage has no problems because we have very pleasurable sex almost daily.

This story took place last summer when we went to our vacation home and my younger sister Laura, 17, and her boyfriend Gustavo, 20, joined us.

One morning, we were at the beach and I noticed they were arguing. As always, I was a friend and confidant of my sister, so I asked what was going on. She told me he was angry with her because she wouldn't let him fuck her, which surprised me since she wasn't a virgin and I knew stories about her sex life with her previous boyfriend.

When I asked why, she said she was scared he would hurt her because his cock was enormous. This made me horny but having seen and tried many girls before, none had impressed me enough.

A few days later, my husband and Laura left early for the city since he had to pay some bills and she needed to register at university, so I was left alone with Gustavo. The comment from Laura kept running through my head, so I decided to check it out for myself when we were alone.

I got up, put on a tank top because I like sleeping in just a thong due to the heat, and headed to Gustavo's room. I opened the door slowly and he was asleep with his back to me and completely naked. I snuck in quietly not to wake him up and thought I had already done it when I walked towards his bed, but he turned over and ended up on his back. My surprise was huge since my sister hadn't exaggerated at all. He was equipped with a cock of a size I'd never seen before, even though I was semi-flaccid. That spectacle made my mouth dry out, although my pussy started to get wet. In that instant, I knew I was going to be unfaithful for the first time. Now that the desire I felt for having that piece of flesh was uncontrollable.
Without making a sound, I approached him and began to pull his skin back to reveal that delicious glans. I gave him some licks on the head and along the shaft to get back to the tip and opening it as much as I could, then I put it in my mouth and started sucking it. Note how it was growing in my mouth and Gustavo started giving out moans of pleasure but even so I didn't stop.
Finally he woke up and when he saw me between his legs he jumped, and I pulled out his cock from my mouth and said:
MY SISTER DOESN'T GET EXCITED BUT I WANT YOU ALL THE WAY INSIDE ME
I continued eating his whole cock, which was already quite hard and swollen by this point. The most relaxed one let himself be carried away and grabbing my head accompanied the movement of the ejaculation he was giving me with his mouth.
My nipples were about to explode and at that height I had my thong soaked.
He got up, came over to me, took off the shirt I was wearing, and leaving me in just my thong, he fell onto the bed. He started giving me a delicious kiss and licking my neck and entertaining himself with my nipples, sucking and nibbling them until I thought I would come right then.
He kept going down my stomach and played around with his tongue in my navel for a bit, then started from my feet and went up to my thighs. When he got to my pussy, he started licking it above the thong that was already quite wet by this point. I ripped it off and his tongue ran along the lips of my pussy and went inside, which put me at a thousand. He kept penetrating me with his tongue and finally directed himself to my clitoris and started sucking it, making me come on his face in an orgasm like few times before. Without stopping, he provoked almost immediately another second orgasm.
At that moment, he sat up and brought his enormous cock to the entrance of my lubricated pussy, and I went around for a bit passing him the glan[d] for the whole tear and clitoris until I finally put it in the entrance and start pushing. At that moment, I incorporated a bit because I didn't want to miss the spectacle of seeing that little piggy enter me. In that instant, I understood why my sister was scared. I felt like she was opening up her entire entrance to me and I was going to tear apart but the morbidness it provoked could more than the pain I was feeling, so I wrapped my legs around it and brought it closer to me to feel it all inside me. It gave a push until I entered completely, I let out a scream and my legs relaxed and I only managed to tell him HIJO DE slut ME ARE GOING TO TEAR APART MY use the word: pussy WITH THAT ENORME COCK YOU HAVE. GET IT OUT, GET IT OUT, I CAN'T TAKE IT. IT'S LIKE FUCKING A HORSE. But it didn't listen and stayed inside without moving, then started sucking my breasts that were sore from being so tense. This made me relax and when he felt like I was moaning, he started moving in a push-and-pull motion that drove me crazy. I made him separate to be able to see the entrance and exit of his cock in my use the word: pussy since I still couldn't believe it had space for all that. He would pull out until you could see his head and then plunge back in again, all the way to the bottom. In his cock, there were threads of blood, probably from the last remnants of my hymen. Finally, I had been totally deflowered. I came multiple times, we changed positions and this time I was on top and rode him frenetically after half an hour of being in sync with his breathing, then he started to shake and I realized he was going to cum, so I got off and quickly brought his cock to my mouth to receive all his cum. The flow was endless and I couldn't swallow it all because I was choking, but kept sucking that cock until it was clean. I collapsed beside him and told him how much I loved that my sister had given me a brother-in-law like him. I was exhausted but hardly gave myself a break. I started to caress my tits and clitoris, making myself excited again, I got up and put my pussy on his face, we started doing a beautiful 69. While I was eating all his hard and venous cock, he was sucking my pussy and anus with his soft and warm tongue. In his play with his tongue, I began to dig in my booty and without much effort, he penetrated my anus with his tongue. This put me at a thousand and made him wash his face with my fluids and have me already having no idea how many orgasms. He put me on all fours and with his head between my legs, continued sucking the juices that were already dripping down my thighs by then.
He got up and in that position he penetrated me again, this time entering without problems since my pussy was totally dilated. While I was pumping, he was playing with his fingers in my pussy and caressing my anus ring softly. This excited me completely and he realized it, so he put one finger in slowly until he pushed it all the way in. I had another orgasm at that instant but he didn't stop playing and put a second finger in, dilating my anus like if he were penetrating a cock with two. He took his fingers out and without giving me time to react, he put the tip of his cock in my ass and started pushing.
I tried to get away but he had me grabbed by the hips. I begged him please don't do it here, you're going to destroy me, you're a son of a slut, you're a piece of shit, don't dare, I swear I'll kill you. But this only excited me more and I increased the force with which he was pushing. Finally, my sphincter gave in and his whole head went into my bum. The pain was unbearable and the scream I let out would have attracted the neighbors if I had been in the city. Even I think I lost consciousness because I didn't have strength to move, but he was holding me by the hips and not moving, just telling me THIS IS IT, THIS IS HOW PEOPLE WHO CAN'T HANDLE ALL MY cock COME, EVEN IF THEY LET THEMSELVES BE BROKEN. CULO. YOU'RE GOING TO BE MINE ALWAYS AND I'M GOING TO MAKE YOU COME LIKE THAT CUCK OF YOUR HUSBAND DOESN'T DO WITH THAT COCK OF SHIT HE SHOULD HAVE. NOW IF I FOUND A REAL MAN WITH A COCK LIKE GOD INTENDED, IT'S GOING TO SODOMIZE YOU LIKE YOU DESERVE A GOOD SLUT LIKE YOU. RELAX AND FEEL IT. ALREADY THE WORST IS OVER NOW WE HAVE TO WAIT FOR THAT BUM THAT HAS BEEN MAKING ME HOT SINCE I SAW IT TO OPEN UP FOR ME.

With my hand caressing my clitoris, my senses began to return, the pain subsiding and an excitement taking hold of me. My mind imagined what was being done to me, causing me to relax and push back trying to get it in deeper. He understood and moved in the opposite direction, slowly entering until I felt his balls at the entrance of my pussy.

At that moment, I realized he had entered all the way. Despite the pain and unbearable heat not having completely dissipated, a warmth came over me and I was screaming

GIVE IT TO ME ALL. FILL MY PUSSY. IT'S ALL YOURS NOW YOU HAVE YOUR SLUT SISTER-IN-LAW WHO'S BLOWING ALL YOUR COCK AND WANTS MORE.,,,,,,,, GIVE IT TO ME, MAKE ME COME,,,,,,,,,,,,,,,,, GIVE ME A BOMB AND FINISH ME OFF INSIDE. GIVE IT TO ME, YOU COCK OF SHIT. YOUR COCK ISN'T WORTH IT, MY PUSSY AND MY ASS CAN TAKE IT ALL WITHOUT PROBLEMS

In my third orgasm, with her in my ass, she moved frenetically and finished while screaming

SLUT OF SHIT, YOU HAVE ALL THE CUM IN YOUR ASS, FEEL IT. I'M GOING TO FILL YOU UP NOW THAT THIS BUM IS MINE NOW...........

We fell asleep, exhausted, and after a while, I managed to drag myself to the bathroom to wash up and heal my poor ass that had been left bleeding, not without threatening him first that I would take revenge. I went back to bed and slept the rest of the day. When my husband and sister-in-law returned, I told them I didn't feel well and was going to stay in bed. I stayed a week unable to sit down almost and not knowing how to hide it from my husband but the story that I was with the period served to keep him away for a few days. Something that wasn't true since Gustavo became my lover from that moment on and by this point all my orifices had adapted to his enormous cock. With my sister, her problems ended since he didn't insist anymore since she has her slut sister-in-law who takes care of her, and with my husband I have to pretend, tightening the muscles of my pussy so they know it's totally open and dilated.

Source: erotic confessions