The desire to hurt yourself through sex in dreams is a symbol of guilt or the desire to feel extreme emotion. Perhaps you are not allowing yourself to feel deeply in waking life? In dreams, any form of sadism would suggest a counterbalance to the dreamer’s conscious way of being in the world. For example, a timid person may have dreams of sadistic sex as an escape mechanism; similarly, a domineering person may have the dream to show an unconscious need to be controlled. The explicit eroticism of sadomasochistic acts could also suggest a battle of wills or extreme sexual tension.
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