i agree with septmorn ink, you should tell anyone that you can exactly what is going on so that they may help you. if not your t then a friend who can help. and do go to the police in any case.
i don't think you should have anything to worry about with your t... this situation is not a reflection on you, it is an unexpected circumstance with this creepy guy moving in nearby. your t may be able to offer advice with dealing with him and/or help finding sources to help you fix this situation.
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