This incident happened about 4 years ago. I’m 23 now, so it was back when I was 19. My brother is a year older than me, so he is 24 now and was 20 back then. As I remember it, I had some random friend request on Snapchat. I didn’t pay attention to who it was because it totally seemed like a completely random person, but it was my brother pretending to be some stranger. I accepted it, asked what the guy wanted, and we started talking from there. The conversation with the fake person started casually. For example, we would talk about something random, and it took a while before things took a drift towards the sexual side. I found myself sexting and sending him nudes and receiving some back. For a few reasons, I never knew it was my brother, and those were that he lied about living in another country. I never got to see his face or anything like that, like people send snaps about what they’re doing or randomly their room. I never got to see anything aside from his dick. I didn’t care about that because it meant I could keep some privacy for myself, i.e., I didn’t have to reveal my face or anything like that.
This all changed after a few months. I figured out that it was my brother all along, and here’s how: I was horny on the living room couch, so I opened up my Snapchat and decided to text my online fuck buddy. I texted him and noticed my brother’s phone vibrated. I ignored it completely, thinking it was just a case of really odd timing. I waited patiently for a bit, then texted again. This time, his phone vibrated again, and that made me really suspicious, so I decided to text him on Snapchat, and it did not vibrate this time, so I got up and left the room. A few moments later, I got my brother’s reply on Snapchat from his main account. This made me believe that it might actually be my brother that I sexted with, and I had all these good moments where I masturbated in bed while texting him, but I felt like I needed more on it and was motivated to find out if it was actually him.
I pretended like I didn’t know till we were home alone and I walked up to him and asked if I could quickly use his Snapchat for a cheeky trick. I saw that it required two phones with the app on them. He denied it, but then I tried to grab his phone and do it myself, like the stupid and annoying sister I was. He was so persistent in not handing over his phone, so I asked if he was hiding something, and he denied it, and I realized I wasn’t getting anywhere with this cheeky act. I had to be straight up. I told him everything and why I’m suspicious that it’s him. He started saying I’m weird and it’s all a gimmick to get him into trouble. I looked at him and took my top off and stood in front of him in a bra because I was really confident that it was him and he stared at me and finally let his guard down, revealing that it was him. He explained why he decided to do all that and said it was because all his friends kept talking about how hot his sister was and all. He wanted to see it for himself, so he wasted a few bucks on buying a random Snapchat account, since that would make it look real. His plan was to dip when he got the nudes, but he gained some sort of sexual attraction towards me, so he stayed and pretended to catfish me further in order to get some sexting action.
I left the room in disappointment and spent the day upset, but at night, when I got horny, I kept thinking about it, and all I had in mind was my brother. I texted him, asking him to use his alt and sext with me because I was horny. That didn’t work because I knew the secret now and it just didn’t feel the same, so I got up and went into his room. I told him to get his dick out and I got to work. I sucked him off at first, then laid down on his bed with my legs open. He ate me out first, then shoved his dick inside and proceeded to fuck me. I felt like a slut at this moment, but it was honestly really thrilling, so I kept wanting more and more because of this weird hype and intensity I had inside me… I didn’t care if he was my brother or my fuckbuddy; I just wanted him to ram inside me as hard as he could, and he did do that. He came all over my face after it was all done. I felt really embarrassed about what had happened. I just ran into my room, locked the door, and didn’t come out until the next day at lunch. For a bit, it was really awkward between us, but it passed quickly because we both changed into completely different people when we were horny. One of us would just approach the other when horny and ask for help, and that would turn into us fucking like animals, not giving a fuck about being siblings. We kept getting comfortable with each other as time passed by and started having frequent sex.
Source: reddit.com/r/Erotica/comments/12km86f/how_i_ended_up_having_sex_with_my_brother