Who is to blame for the deaths of Romeo and Juliet?
This is an often-considered question and you should definitely check out the link below for further discussion. I consider myself somewhat biased in this analysis because I always felt as though Juliet portrayed such maturity and loyalty that she did not deserve to be mixed up with such a childish young man as Romeo. She was only thirteen years old, yet the adults around her and the man she chose to love let her down. In my opinion, then (and it simply comes down to a subjective analysis), Romeo is most at fault for three reasons stemming from his inability to listen to the truth.
First, he should have listened to himself. In Act I, Scene 4 after Mercutio's narcissistic Queen Mab speech, Romeo tells the audience in an aside that he feels whatever comes next (he's on his way to Capulet's party) will lead to his death. He says,
I fear too early, for my mind misgives
Some consequence yet hanging in the stars
Shall bitterly begin his fearful date
With this night’s revels, and expire the term
Of a despisèd life closed in my breast
By some vile forfeit of untimely death.
Although I joy in thee,
I have no joy of this contract tonight.
It is too rash, too unadvised, too sudden,
Too like the lightning, which doth cease to be
Ere one can say “It lightens.” Sweet, good night.
This bud of love, by summer’s ripening breath,
May prove a beauteous flower when next we meet.
Wisely and slow. They stumble that run fast.
Therefore love moderately. Long love doth so.
Too swift arrives as tardy as too slow.
But look thou stay not till the watch be set,
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.