Frankly, it's hard to compete with Shakespeare and his original idea, so I would stick to the iambic pentameter and his original writing.
Well all I know is that Juliette takes something and she falls asleep or is unconscious and when Romeo is arrives he thinks she is dead so he takes poison and dies. But then Juletee wakes up and sees he is dead so she ends up killing herself. And I know they were teenagers. Only 14!!! Is that what you wanted to know?
It's more than being teenagers and taking poison. It was more of being locked up for so long (and then having an arranged marriage to this ugly conceited man(Paris)) and then finding this guy (Romeo) at a masquerade ball and falling in love with him as he expresses his love for her under a moonlit night and then he is taken away from her and sent to barren lands only to see him again in death.
Her father didn't even want her to marry at the age of fourteen. It was his only child and overall, his life. He would rather had waited a year to send her off to make babies for this guy who would cheat on her and never come home. Her father (Capulet) was trying to save her.
On to history (I feel like I'm back in school), the life of a woman was short and dangerous. They had to have children young because by the age of 25 or so she was considered an old hag. Men in the 17th century or 16th century would run around and drink and their wives would have been happy just to see them for awhile in their lifetime. I guess that goes for most of history as well...
Romeo is a character in himself, also. He's whiny, conceited, a child, ignorant to others, and one-set minded. You can see what I mean in the first act before he met Juliet when he's fonding over his cousin or some other woman (Rosalinda, I believe). Juliet, though, acts like a young girl who is confused and looking for solice in something and trying to mature before her age.
I think I've written too much though. What is important is to understand poetry and Shakespeare himself.