What is Parris dramatic function in Act Three?

From Shmoop Literature on Romeo and Juliet

Paris' Timeline

http://www.shmoop.com/timeline/literature/william-Shakespeare/romeo-and-juliet/paris.html

3.4: Even though the Capulets are mourning for Tybalt's death, Paris shows up hoping for news that Juliet wants to marry him. Lord Capulet is worried that his daughter's grief over her cousin's death is out of control, so he asks Paris if he would be willing to marry Juliet right away, that very week. Paris agrees.