There are many lessons taught about love in Romeo and Juliet.
- Love can't conquer all. -Friar Lawrence thought that by marrying the "star-crossed" couple, the fighting between the families would end. (But it didn't)
- It's easy to fall in love with your enemy, but hard for you and your enemy to be together. -Enough said.
- If you live in a world of hate, you will be yearning for love. -Romeo and Juliet were living a in world of hate. That's why they wanted to be together so badly.
Hope this helps! :)