"thy face is mine"-he claims Juliet to be his just as women were meant to submit to their husbands in that society. shows possessive behaviour like her father
He is Romeo's rival for Juliet's love. He reflects Romeo's love for Rosaline so when Romeo stabs him at the end of the play, Romeo is killing the part of him that isn't solely dedicated to Juliet.
Paris also ends up dying for his love of Juliet
He is the ideal man of that society. He is rich, polite and respectable "the gallant, young and noble gentleman" which is the opposite of Romeo