N.J. Stat. § 2A:34-25
If after the judgment of divorce or dissolution a former spouse shall remarry or a former partner shall enter into a new civil union, permanent and limited duration alimony shall terminate as of the date of remarriage or new civil union except that any arrearages that have accrued prior to the date of remarriage or new civil union shall not be vacated or annulled. A former spouse or former partner in a civil union couple who remarries or enters into a new civil union shall promptly so inform the spouse or partner paying permanent or limited duration alimony as well as the collecting agency, if any. The court may order such alimony recipient who fails to comply with the notification provision of this act to pay any reasonable attorney fees and court costs incurred by the recipient's former spouse or partner as a result of such non-compliance.
The remarriage or establishment of a new civil union of a former spouse or partner receiving rehabilitative or reimbursement alimony shall not be cause for termination of such alimony by the court unless the court finds that the circumstances upon which the award was based have not occurred or unless the payer spouse or partner demonstrates an agreement or good cause to the contrary.
Alimony shall terminate upon the death of the payer spouse or partner, except that any arrearages that have accrued prior to the date of the payer spouse's or partner's death shall not be vacated or annulled.
Nothing in this act shall be construed to prohibit a court from ordering either spouse or partner to maintain life insurance for the protection of the former spouse, partner, or the children of the marriage or civil union in the event of the payer spouse's or partner's death.
N.J.S. § 2A:34-25