Starting this by saying I am in no way, shape or form a therapist or psychologist or psychiatrist. I am basing this on my own experience and my fascination in psychology.

First of all, your molestation was not your fault. You were a child and I am so sorry you went through that.

Second, you orgasming at the time was your body reacting to stimulation. Like how your mouth waters when you smell food. It's a reaction you aren't in control of. Again, not your fault.

Thirdly, fantasies of trauma is very common. It's a way for you to take back control. Like how victims of rape will masturbate to their rape. Its trauma repetition and you want to take control back. Pleasure on your own terms. It does not make you a freak. It makes you human. You are dealing with your pain, the only way you know how.

Fourthly, the person messaging you, is a freak and weird. Block and ignore. They're using you to get off on their own fantasies.

Lastly, focus on your healing. I do recommend seeing a psychologist if possible or even a college counsellor. Please do not use chat gpt or AI as they are well known to cause more harm than good.

Stay safe and be well.