Capulet tells Paris to marry Juliet, as he (Capulet) is hoping that it will take her mind off her grief of her cousin's death.
(Although, Juliet is actually more upset about Romeo's exile than Tybalt's death, but her parents don't know that.)
Paris says "Thou must die." and Romeo responds "I must indeed, and therefore came I hither."
"I must indeed, and therefore came I hither." It doesn't make much sense unless you realize that Paris spoke first and told Romeo that he must die.
romeo fights Paris (where?) and Paris dies.
Juliet's father did not know about Juliet's marriage to Romeo until after her death. He was insisting on her getting married to Paris, not knowing that she was already married. And Juliet didn't want to tell him why she didn't want to marry Paris, which made him even more insistent.
Paris believes that Romeo has come to Juliet's tomb to cause trouble or desecrate the site, as he is unaware of Romeo and Juliet's relationship and thinks Romeo is a Montague seeking to disrupt the Capulet tomb. This misunderstanding leads to a confrontational encounter between Paris and Romeo at Juliet's tomb.
Romeo wins. Paris dies.
Romeo stabs Paris in Act V, Scene III of Shakespeare's play "Romeo and Juliet," when he encounters Paris at Juliet's tomb. Paris believes Romeo is there to desecrate the tomb, and they engage in a heated confrontation, resulting in Romeo fatally stabbing Paris.
Romeo promises he will put Paris' body in the crypt beside Juliet after he dies.
Paris suspects romeo is attempting to desecrate the tomb.
After Romeo injured Paris. Paris told him "Lay me in the tomb with Juliet". Romeo agrees and put him in the tomb with Juliet.
Monday
Paris goes to pay his last respects to Juliet , when Romeo shows up . Then Paris and Romeo gets into a fight and kills Paris. As Paris's last word he says" Oh, I am slain, if thou be merciful, open the tomb, lay me with Juliet." So Romeo lays him (Paris) next to his wife Juliet (Romeo's Wife).