I agree that you should find the right therapist to be open about the issue for one reason - in my experience, undesired sexual attractions and fetishes get noticeably weaker and more controllable when you start analyzing them and when you don't keep them as a "very private secret". In this sense, our subconscious seems to be playing hide&seek with driving your behavior to some direction but giving you no clue why, and as soon as you admit the problem and start digging deeper, your subconscious doesn't feel that it's the "Big Private Dirty Secret to Feel so Excited About" anymore, and lets it go to some degree.

Also, now when you don't have any real-life relationship, still your body needs to relieve the sexual desires. They won't go away. If you could find some safe and legal way to have intimacy then it might become much easier to deal with those undesired thoughts.