Dear Daniel,
that was terrible experience. Thank God you don't have such nightmares anymore!
Arousal on cuts thoughts there is clear evidence of your abuse frown. Your dad's friend is lunatic and monster that should be intensively treated in some closed ward for the rest of his life....

I hope you are trying hard to love your sexual parts (and all other parts too smile ) and learn how to be OK with it...
_________________________
My story