In Romeo and Juliet how does Romeo react to the news that he is banished from Verona?

Romeo is very emotional after the fighting which takes place in Act III, Scene 1. His best friend Mercutio is dead and he has killed Tybalt. And after hearing he has been banished from Verona he becomes quite distraught. He is deaf to Friar Lawrence's claims that he is actually fortunate. He tells Friar Lawrence that he would rather die than be placed in exile. He says in Act III, Scene 2,

Ha, banishment? Be...

Romeo is very emotional after the fighting which takes place in Act III, Scene 1. His best friend Mercutio is dead and he has killed Tybalt. And after hearing he has been banished from Verona he becomes quite distraught. He is deaf to Friar Lawrence's claims that he is actually fortunate. He tells Friar Lawrence that he would rather die than be placed in exile. He says in Act III, Scene 2,

Ha, banishment? Be merciful, say “death,”
For exile hath more terror in his look,
Much more than death. Do not say “banishment.”

He goes on about how he will not be able to see Juliet. Others will, and even the dogs and cats can gaze on her beauty, but not him:

’Tis torture and not mercy. Heaven is here
Where Juliet lives, and every cat and dog
And little mouse, every unworthy thing,
Live here in heaven and may look on her,
But Romeo may not. 

At one point he even throws himself dramatically down on the floor as he argues with the Friar about the merits of being banished. The Friar tries to convince Romeo he is lucky that the Prince didn't sentence him to death. The Nurse then shows up and Romeo begins to pull himself together. In the Nurse's presence the Friar launches into a monologue chastising Romeo, saying, "Thy tears are womanish", and providing a potential solution to the problem. He tells Romeo to be patient, go to Mantua and stay there for a while until emotions calm down in Verona. Then, at a time when things have gotten back to normal, the Friar will announce that Romeo and Juliet have been married. He says,

For then thou canst not pass to Mantua,
Where thou shalt live till we can find a time
To blaze your marriage, reconcile your friends,
Beg pardon of the Prince, and call thee back
With twenty hundred thousand times more joy
Than thou went’st forth in lamentation.

Romeo listens intently and is somewhat mollified, saying, "How well my comfort is revived by this!" He then goes to Juliet using the rope ladder brought by the Nurse to ascend Juliet's balcony and enjoy his honeymoon.

The Friar's plan is ultimately thwarted as Lord Capulet, unaware of his daughter's marriage to Romeo, promises her to Count Paris, setting the stage for the tragic events in Act V.