How did older characters influence Romeo and Juliet in the play?

Older characters influence Romeo and Juliet in a number of ways. Firstly, the Capulets and Montagues are feuding because the heads of the respective families refuse to make peace with one another. If Romeo's father and Juliet's father were to reconcile, Romeo and Juliet would be allowed to live their lives in peace. This, however, is not the case, and the pair are forced to hide their love from the social sphere. Another older character who influences the pair is Juliet's nurse. In contrast to Juliet's idealistic vision of love, the Nurse sees love as something more pragmatic and sexually based. Though the Nurse does not quite understand Juliet's conception of love, she nevertheless facilitates the romance of Romeo and Juliet throughout the play. Similarly, Friar Lawrence also facilitates their romance, despite not fully approving of nature of their love. For Friar Lawrence, everything should be taken in moderation, even love. Despite this philosophy, he secretly weds the pair and provides Juliet with the sleeping potion that ultimately leads to her death, as well as Romeo's. In all of these cases, the older characters act according to what they deem to be the best course of action, and this results in doom for the two star crossed lovers.