The story of Romeo is quite beautiful however it caused hurt and anger in their parents. But they loved each other enough to die together though the parents may not approve Romeo and Juliet's love was to big in their hearts and souls. No one understood but they understood each other, in the end they thought if they can't be together then their already dead because they weren't together.
A topic is what the paper is about, a theme is sort of how a story is set. For example, maybe my topic is danger, so I use that through the theme of snow