I have obsessive thoughts about infidelity, though it does not involve me at all. I have never cheated, nor have I been cheated on. So I wonder why I have it, but I have only theories. I know that does not seem to matter, but it does. I feel alone because of this and I wonder if others have obsessive thoughts about things that have nothing to do with their real life? For example, someone who is Buddhist might have obsessive thoughts about being Muslim, yet they don't know any Muslims, never attended a mosque, nor have observed Ramadan for instance That is a bad example and I don't mean to offend any Muslims or Buddhists, but I was trying to explain that my thoughts have nothing to do with my life outside of the mental images and compulsions.