Sex runs deep into our subconscious. You would have to tell people here a lot more about your personal experiences and your feelings for someone to even begin to be able to give you advice that might possibly be constructive. Essentially, you need to probably talk to a professional about that - a sex therapist, a psychologist or a psychiatrist. It could be really almost ANYTHING - low sex drive, vitamin deficiency, sexual dysfunction, suppressed fetish, etc.