Both of them loved Juliet and wanted to marry her.
romeo fights Paris (where?) and Paris dies.
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.
After Romeo injured Paris. Paris told him "Lay me in the tomb with Juliet". Romeo agrees and put him in the tomb with Juliet.
Paris suspects romeo is attempting to desecrate the tomb.
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).
Paris thinks that Romeo plans to commit some act of desecration or vandalism. Paris is easily prejudiced and is happy to believe that Romeo is an evil monster just because he is a Montague. Compare Paris instantly believing the worst of Romeo to Romeo's compassionate behaviour to Paris.
Paris wanted to marry Juliet. Romeo succeeded.
Paris thinks that Romeo is there to vandalize or dishonor Juliet's body.
Paris is at the tomb of the Capulets where Juliet was laid to pay his respects to Juliet. Romeo runs into him there and they end up in a fight. Romeo kills Paris.
At Juliet's tomb, Paris discovers Romeo there and believes he has come to defile the tomb. A fight ensues between them, resulting in Paris being killed by Romeo. Romeo then takes his own life beside Juliet, expressing his love for her even in death.
Romeo isn't destined to marry anyone. He does fall in love with Juliet. Juliet is the one that is destined to marry Paris.