Character in Romeo and Juliet are not always what the seem:
” Deny thy father and refuse thy name. Or, if thou wilt not, be sworn my love, And Ill no longer be a Capulet” – Juliet.

Romeo and Juliet explores the complex relationship between fate and free will:
“What if this mixture does not work at all? Shall I be married then tomorrow morning? No, no this shall forbid it; lie thou there.” – Juliet

Romeo and Juliet explores complex relationship between fate and free will by relying on “God” to determine their future together.  By Juliet using “What if this mixture does not work at all? Shall I be married then tomorrow morning? No, no this shall forbid it; lie thou there.” is proving that Juliet would rather fake her death and marry Romeo rather then marrying Paris who she was forced to marry by her parents. This is fate by Juliet putting her life on the line which she could potentially end up not waking up at all or this posion even failing in some way this is where she relies on fate.

Shakespeare language is where his genius lies
“If he be married My grave is like to be my wedding bed” – Juliet.
“Blind is his love, and best befits the dark.”
“A pair of star crossed lover takes their life”