Last weekend, my husband of 5 years and I went out with his brother and his wife. We had a good time. My sister in law and I don't really get along very well but I felt like we bonded some. (We are competitive people and often get into arguments because we both want things our way.) We went to a Karaoke Bar and there was a lot of drinking. We got home so late that they just stayed the night. One week later my husband breaks down telling me that he and my sister in law had shared a drunken kiss. I was infuriated. He told me because he said he was disgusted with himself and couldn't live lying to me. He said there was no attraction to her at all and cannot give me a reason why it happened. He said it has opened his eyes to seeing how much he loved me. I ws so upset and couldn't believe he had done this with her of all people!! A stranger would have been easier to handle!! And as for my sister in law, when I confronted her, she didn't even reply. I was rather in a rage when I spoke to her but I told her she has ruined it with me forever and was angry that she had done it and was still trying to be my friend. So what should I do? Keep in my mind that I have a child and she has three and they are cousins. And also we have inlaws that want family holidays with everyone there. What is the most civil, mature way to handle this situation?
