 However, their content, form, and meaning vary depending on the disorder, with OCD sexual obsessions being not only involuntary but also unwanted, and causing great mental distress and suffering for the person with OCD.Because sex carries significant emotional, moral, and religious importance, it often becomes a magnet for obsessions in people predisposed to OCD.Common themes include unfaithfulness, deviant behaviors, pedophilia, the unfaithfulness or suitability of one's partner, and thoughts combining religion and sex.