My sister caught me masturbating to porn the other day. She is 23 and I am 26. I was very embarassed and avoided her for days until she finally came up to me and said don't worry I wont't tell but can I watch you do it next time? I was shocked and all I could say no. She then said I'm a virgin and I have never seen a guy naked before. I just still did not know how to reply so I just said no and left. It has been a week since she said that and everyday I get hard thinking about it. I am also a virgin and I am going crazy because I now want her and I know it is so wrong. What should I do? She never really asked for sex but I think she wants it.