The other night my boyfriend and I were just chatting, kind of using foreplay to get ourselves in the mood, so I told him that I was attracted to his sister, which I am, because she is lovely and she very much reminds me of him. He said that I should tell her and do something with her. AT first I was like, uugghh that would be strange for you wouldn't it? He said no, he wouldn't care... long story short he asked if I would want a 3some with him and his sister (she's a year or two younger than he). I answered honestly, yes and I said would you? He then answered maybe. This turned me on a bit, I know its wrong of him to think about that, but I'm not kin, and he did ask. I would usually be jealous if he wanted to have a 3some with another woman, but for some reason thinking about him, his sister, and It sparked no jealousy. Obscure I know. So I continued to ask him questions like, what would you want us to do, blah blah, and if he would like certain things. About 20 minutes into it he got mad, apparently and didn't want to talk about it anymore. I was confused. But the thing is, he and his sister are like extremely close, they talk to each other about things I wouldn't even talk to my best friend about; and when they were younger, he was around 11 or 12 he basically coerced her into jerking him off. I know guys will have their random thoughts, just because their guys, and now that he told me sometimes he would think about doing stuff with his sister, do u think it has to do with that? Also why did he all of a sudden change his mind or something? He said I made him feel ashamed, and disgusted. But I didn't start it though. He did. Last but not least, I feel badly for making him feel "ashamed" yet the idea still turns me on very much so... am I wrong... what should I do? What is going on in both our minds?