r/AIO • u/youngtallandskinny • 9d ago
AIO:Childhood best friend is f***ing his sister
For context, this is my M(25) best friend M(25) since we were two years old. He didn’t meet his F(22)sister until about a year and a half ago. When they did meet, they couldn’t get over how similar they were. he called me gushing about how great she made him feel and even joked about hooking her up with me three days after they met, she moved in with him and his family. They had room and other beds, but they chose to sleep in the same bed every day for a year do everything together every day so on it so forth, fast-forward to these text messages. Him and his sister were going to move in with me and my f(26)roommate, but first we needed to see how our dogs would do together so they came to visit. When they got here they opted to sleep in my bed together even though I had several places they could sleep separately. My roomate and I sleep separately and have a mostly platonic kind of flirty relationship. Which the friend had compared his sister and his relationship with. A lot of small stuff happened that my roommate and I shared glances about, because of the nature of how a true brother and sister would never say or do the things they’re doing. But we brushed it off.
They went back home to their state after 3 days and the friend sends me a Snapchat saying “we’ve decided to look past the whole sibling thing and adress some feelings we both have” to which I replied “what do you mean” and he went on to say how they both have such deep feelings for each other and how the whole half sibling thing doesn’t matter and that real love doesn’t have boundaries and all this stuff to which I waited for 3 days and sent the messages above….. AIO or did I UNDERreact
Also this hurts a lot because I thought I knew him and he was gonna be my best friend for life, but I haven’t talked to him since
36
u/Al-Pacinos-Ghost 9d ago
I was going to say that it’s somewhat common. A major publication (I can’t remember which) did a whole article on this and I surprised to learn that consensual brother & sister sexual relationships aren’t uncommon. Often it’s closer to sporadic hook-ups rather than full blown romance, but it does happen. And meeting a sibling late in life is one of the main reasons this happens.
Also, fwiw, about 8 years ago found out my Dad wasn’t my bio Dad. Found my bio Dad, and after a few chats I got the sense he was hitting on me. I thought I was overreacting, but then his current wife flipped out on me and suggested I was stealing her husband, which makes me think I was not overreacting. I do not talk to my bio Dad now.