You can be married if you go to the NPC Lynda.
you:hi
lynda:Welcome in the name of the gods, pilgrim ....!
you: marriage
lynda:You want me to initiate a marriage ceremony?
you:yes
lynda:In the Name of the Gods of good, I ask thee, if both of you are prepared and ready!
you:yes
lynda:Silence please! I hereby invoke the attention of the eternal powers looking over our souls and lives. May the gods bless us!