3.   For two persons to establish a civil union in this State, it shall be necessary that they satisfy all of the following criteria:
 
   a.   Not be a party to another civil union, domestic partnership or marriage in this State;
 
   b.   Be of the same sex; and
 
   c.   Be at least 18 years of age.
 
   L.2006, c.103, s.3; amended 2018, c.42, s.4.