He fears that his love for Juliet has made him effeminate, thus causing Mercutio to die.
Romeo fears that the dispute between his family and Juliet's will make it impossable for their love to continue.
Juliet, of course.
Juliet fears their love because it is forbidden by their families, the Capulets and Montagues, who are feuding. She worries about the consequences of their relationship being discovered and the potential backlash from their families. This fear is heightened by the betrayals and violence that have already occurred due to the feud.
romeo and Juliet
"He lent me counsel, and I lent him eyes."
It has made him effeminate.
Apart from Romeo and Juliet, nobody.
Juliet: "Romeo, Romeo, Wherefore art thou Romeo?"
hope from Juliet, romeo and the friar that romeo and Juliet will live together in love for the rest of their lives.
Early in the play, Romeo and Juliet meet at the Capulet's party and they both fall in love at first sight.
hmmm... seems kind of obvious to me.
A motto for Romeo and Juliet might be forbidden love.