Georgia,
I feel you need to seek the help of a counsellor to sort this complex question out . It touches on my own therory that we are influenced by outside agencies , your natural tendencies have been overlaid with someone elses sexual needs . Also the dressing has been associated with sexual activity you will have to become comfortable with , that maybe something you will have to live with .
At the moment you feel shame and guilt , that is also again where a counsellor can hopefully help . The bottom line is if you don't resolve these issues they will only get worse , age does not cure in these circumstances , the elephant in the room will just get bigger .
Your sexuality isn't a problem as long as you are comfortable with it , try not to get hung up on the labels .