When you say "sue," I am uncertain regarding whether you want to sue him or get the authorities involved in charging him with a crime. There will be issues regarding the time that has elapsed. If you want him charged, go to the police. If you wish to sue him (financial recover) then you sit with an attorney.
This is not intended as individual legal advice and there is no attorney client relationship established by this answer. It is advisable that you seek individualized legal assistance. This is not a substitute for hiring an attorney.
I agree that you should first report this crime to the authorities. You also can sit down with a lawyer to see what options you have for any damages you sustained. I am so sorry this happened to you.
See a local lawyer. There is no confidentiality online. Volunteering to answer this question does not create an attorney-client relationship. The likelihood of a positive outcome litigator. Seek out an experienced criminal litigator for a free consultation. If you cannot find one on Avvo, search at the National Association of Criminal Defense Lawyers (NACDL.org) Speak to several attorneys and hire the one that makes you feel confident and comfortable. NACDL local members: http://tinyurl.com/8ru8wtv
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