ROMEO:

I fear, too early: for my mind misgives

Some consequence yet hanging in the stars

Shall bitterly begin his fearful date

With this night’s revels and expire the term

Of a despised life closed in my breast

By some vile forfeit of untimely death.

But He, that hath the steerage of my course,

Direct my sail! On, lusty gentlemen.

In this paragraph, Romeo explains that he feels he will be affected by a consequence controlled by fate, some consequence hanging in the stars. If he attends the party, his life will be taken early by forfeit, or what is known as the horrible sin of suicide, the worst crime of all in those days. He then asks God, the steerer of his course, to lead him on.