the lack of support from the other characters is culpable to romeo and juliet

Everyone has some type of responsibility for the lover's deaths. The lover's themselves are young, rash, inexperienced, and at times irrational. Their acts in fact not only contribute to their own deaths but to Tybalt's and Mercutio's as well. Their parents insist upon carrying on with family vendettas that no one even remembers the reason for, and Friar Lawrence acts in a manner that lies in complete opposition in his job as a religious instructor and mentor.