There's no doubt it was ASA.

You may have gone there with child like faith that it would be a good experience to meet someone of like mind, but you expected someone who would act like an adult, not a deranged weirdo. And it should have been fulfilling. No means NO, whether child or adult.

I'm sorry to hear of your traumatic first time, but I think you're on the right track by getting the professional help of a therapist and also by making this a shared experience through the MS forums. A non judgmental approach can help get rid of a lot of shame, guilt or embarrassment. Good luck.
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Never, never, never, never give up....Winston Churchill