Lord Capulet
The partygoer most outraged by Romeo's presence at the Capulet party was Tybalt. Upon recognizing Romeo, a Montague, he becomes furious and wants to confront him, viewing Romeo's uninvited attendance as an insult to the Capulet family. Tybalt's anger is tempered by Lord Capulet, who insists that Romeo should be left alone, as he is well-regarded in Verona.
romeo spends his day alone and weeping over rosaline
These words were spoken by Lord Capulet in Act 3, Scene 1 of Romeo and Juliet. Lord Capulet is appealing to Prince Escalus for justice after Tybalt is killed by Romeo. He insists that Romeo must pay for his crime with his life.
Balthsar disobeys Romeo by not listening to Romeo's orders in Act III scene 3 when Romeo tells Balthasar to leave him alone in Capulet's vault but instead spys on Romeo to see what he is doing in the enemy's vault .
Paris is at Juliet's tomb to pay conventional respect to her. He recognizes Romeo as a Montague and an exile who is not allowed in Verona on pain of death. He assumes that Romeo's plan is to vandalize the Capulet monument and he tries to arrest him. Romeo pleads with him to leave him alone, but Paris insists on fighting.
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.
They see a copy of the guest list.
Benvolio doesn't approach Romeo in the sycamore grove because when Romeo sees him he turns away so Benvolio figures he wants to be alone and he respects that.
The servant with the invitations cannot read, and so asks Romeo to read the list of people to whom the invitations are to be sent.
Capulet sent a servant out with the guest list to tell those people to come to the party. Unfortunately the servant could not read. He asked a random passer-by, who happened to be Romeo, to read it and tell him who was on the list. Romeo, who was a decent chap, agreed to help him out, since he was in fact literate and able to read the list.
Rosaline is Juliet's first cousin. We know this because it says so on the guest list which the illiterate servant shows to Romeo. Romeo appears to have a thing for Capulet girls.
An illiterate servant of the Capulets, wanting to know whose names were on the list, asked Romeo to read it to him, since Romeo looked like the kind of guy who would know how to read.