Who do you think changed the most throughout Romeo and Juliet?

A lot of people say the Capulets or Montagues. Personally, I saw the biggest change in Romeo. He went from being a cynical boy with trite conceptions of love, and then he met Juliet and he was a changed person. He saw what love was really like for the first time, changing him into an imaginative and less practical person. The same could also be said for Juliet, she went from being miss matter-of-fact, always practical. What's your opinion?