I feel kind of dirty but shocked feeling as well. My fiancee and I lived together and we watch porn now and then. He has talked about a threesome and joining a swingers group. I told him I would do a threesome but I want him and no other man. So the swingers think is out.
He said we could have another girl join us but did not know who. He mentioned my friend Kelly but I worry about her telling someone. He said he would see if his cousin would do it. I ask what this threesome would be, and he said her and I, and him and her. I did not ask how he knew his cousin would let him have sex with her. I think I do not need ot know everything. He called her and she came over last night.
She told me this was a strange request and that he was not totally comfortable doing it. We had a blender of drinks and that relaxed me, but she told me I was still shaking.
My boyfriend kissed me and then his cousin, it was pretty clear to me it was not the first time he and she had done it. She kissed him like she loved him and h loves her I can see. He acted like I was not in the bed or in the room. It was hard to see him between her legs and harder to see him get that much enjoyment from her. The dirty part is she is the daughter of his moms sister.
She grabbed my hand when I started to get up, she told him to do me for a while. He did not seem to want to, I think he was happy where he was.
He did not kiss me much but he went right in me. She kissed me breast and kissed him. He got off and tried ot jump on her, but she pushed him off. She told him to go get us a drink.
She then told me she would make me feel more comfortable and relaxed. She gave me some oral sex and refused to stop until i reached maximum pleasure. She told me not to fake it, she was female and could tell.
That part was interesting and a lot of pleasure. When I returned that for her, I know I did not do so well. She told me it was amazing and I seemed to be very good at it, I know she was making me feel good.

He returned after a long time and I think he was watching us from the hall. He got in bed and gave us our drinks. he ask me how it feels, I told him it was exciting and fun. he said that is good we can do this a lot, I said now and then would be ok. His cousin said that he would come over and join us when we wanted, but she was nto totally comfortable doing this.
I knew that was a lie, she enjoyed his sex more than I ever have. She sucked her drink down and she went back giving me oral sex. While he gave her some from behind. it was not long before he was behind her and watching as she pleasured me. I had a sick feeling and could not orgasm. She ask me what the problem was, and I said nothing. I had all i would have for a while. it feels good and thanked her for doing it.
He got on the bed and she got in top of him. I learned a few moved just from watching her ride him. He finished in her and I have never seen him finish like that.
I ask him while she was in the shower why he did not cum like that with me, he said it was the excitement of another girl in our bed. He was thinking of me while he came. Again I know he was telling a lie. But i love him and I worry about loosing what we have.

She spent the night with us and left early for work this morning. He is still sleeping as I sit here and think about what happened. I will marry a man who I know who loves his cousin. A man who I know has had a lot of sex with his cousin. I am not so sure what to do with my feelings now.