As said in the subject, I do not know what to do. I talk to my sister's husband, Thomas about anything. He informed me that my sister, Olivia wants to have sex with me. I have no clue as to how to handle this. Yes, I am bisexual. Yes, this sounds tempting. No, I could not do this sober. I do not have a husband although my boyfriend says that he supports whatever I do. My sister does not know I am bisexual, nor does she know that I know about her. Thomas knows on both ends but is not telling her to my knowledge. WHAT DO I DO?