New Jersey has no-fault insurance. You should do everything through your insurance company. Very unlikely that he can sue for this, but ask the insurance company whether they will provide a lawyer if he does sue.
This should not be considered legal advice and is intended for educational purposes only. It does not constitute a contract for legal services between any parties. Answers are given to questions for which there may be additional facts not mentioned which might change the legal issues or consequences.
When he sues you turn case over to your insurance company.
The content of the this submission is intended to provide general information on the topic presented, and is offered with the understanding that the author is not rendering any legal or professional services or advice. This submission is not a substitute for legal advice. Should you require such services, retain competent legal counsel.
In the event that the person files a lawsuit against you, I would immediately forward the Complaint to your insurance agent and/or insurance company directly. Your insurance company would then retain an attorney with no charge to you and the attorney would defend you in the court case. Best of luck to you.
A roundup of the best tips and legal advice.