Romeo and Juliet
adult interventions
youth and inexperience
fate/chance
Capulet tells Paris that Juliet is very young, still "a stranger in the world", and is not even fourteen. He urges Paris to wait two more years before he thinks of marrying her
They rush into marrying each other even if they just started to be together. This happened too quick.
Romeo and Juliet's families are feuding and they are not allowed to be in love.
It was fate that the plaque spread when the messenger was trying to deliver the letter to Romeo.
Romeo and Juliet fell in love at first sight and ended up getting married but by the end of the story, things didn't go as planned. They die for their loves. 
If there was no family complication, the lovers would never have acted foolishly to hide their love for each other
The Friar, Lawrence, marries Romeo and Juliet secretly, he also comes up with the plan and helps with fake Juliet's death.
Only a few days before, Romeo had been obsessed and "in love" with Rosaline, a girl who did not return his love as he did to her. The next day he fell in love with Juliet when he first saw her dancing.
Juliet wants to fake her own death so she can avoid marrying Paris and run away with Romeo.
Romeo said...
Is it e'en so?—Then I defy you, stars!—
Paris wants to marry Juliet but Capulet says she is too young still.
foreshadowing
"Therefore, out of thy long-experienc'd time,
Give me some present counsel; or, behold,
'Twixt my extremes and me this bloody knife
Shall play the umpire, arbitrating that
Which the commission of thy years and art
Could to no issue of true honour bring.
Be not so long to speak. I long to die
If what thou speak'st speak not of remedy."
(Act 4, Scene 1)
This quote is foreshadowing Juliet's future and her death from a bloody knife.
Paris says, "Younger than she are happy mothers made" Capulet urges Paris to impress Juliet and invites him to a feast that night.
When Romeo hears from Balthasar that Juliet is dead, he says "I defy you, stars!" and he ends up choosing to suicide after the news his love is dead
"'Twixt my extremes and me this bloody knife" foreshadows how Juliet kills herself after finding Romeo on the ground dead after drinking the poison.