Were Romeo and Juliet ill-fated from the outset?
yes, Romeo and Juliet were ill-fated from the very beginning of their relationship, and even before they met. To begin with, the Prolgue of the play states that they are "star cross's lovers"; this tells the reader/audience that before they even knew each other, they were not meant to be together. Next, the reader finds out about the feuding between the families, which should allow us to realize that there is no way that any two people from these two families could ever be together happily.
In Act I, scene ii, Romeo states, "I fear, too early/...Some consequence yet hanging in the stars/Shall bitterly begin his fearful date /...Of a despised life closed in my breast/By some vile forfeit of untimely death." (A. I, s. iv, lines 106-111). Romeo, foreshadows his own death in these lines. In the next scene, Juliet does the same when she says, "If he be married/My grave is like to be my wedding bed.) (A. I, s. v, lines 134-135).