Quote 1
TYBALT
This, by his voice, should be a Montague.—
Fetch me my rapier, boy. Page exits.
What dares the slave
Come hither covered with an antic face
To fleer and scorn at our solemnity?
Now, by the stock and honor of my kin,
To strike him dead I hold it not a sin.
(1.5.61-67)
When Tybalt discovers that Romeo has crashed the Capulet's party, his first response is … to start a sword fight. But Tybalt is easily provoked. Does he really hate the Montagues so much, or does he just love hating as much as Romeo loves loving?
Quote 2
TYBALT
Uncle, this is a Montague, our foe,
A villain that is hither come in spite
To scorn at our solemnity this night.
(1.5.69-71)
Tybalt would never fall in love with Juliet, no matter how pretty she is: hatred turns all his enemies into the equivalent of cartoon villains. He can't see them as individual people or imagine them outside the context of the feud.
Quote 3
TYBALT
Romeo, the love I bear thee can afford
No better term than this: thou art a villain.
ROMEO
Tybalt, the reason that I have to love thee
Doth much excuse the appertaining rage
To such a greeting. Villain am I none.
Therefore farewell. I see thou know'st me not.
TYBALT
Boy, this shall not excuse the injuries
That thou hast done me. Therefore turn and draw.
ROMEO
I do protest I never injured thee
But love thee better than thou canst devise
Till thou shalt know the reason of my love.
And so, good Capulet, which name I tender
As dearly as my own, be satisfied.
MERCUTIO
O calm, dishonorable, vile submission!
(3.1.61-74)
Romeo refuses to fight Tybalt because he's just married to Juliet, Tybalt's cousin. According to Tybalt, Romeo has "dishonour[ed]" himself by refusing to fight. Basically, Tybalt is calling Romeo a sissy. You can read more about how the play associates violence with masculinity by checking out our "Character Analysis" of Romeo, or by reading "Quotes" for "Gender."