12. Juliet, waiting longingly for the nurse to deliver news of Romeo, obviously feels desperate and exasperated, and nervous to hear the news, and whether it be bad or good.
13. The nurse talks about how she’s out of breath, and how she may be ill, instead of telling Juliet the news, prolonging the desperate wait, and probably causing Juliet to become more annoyed and exasperated.
14. The nurse’s news is that Romeo wants to meet Juliet in a chapel to be married that very afternoon.
15. As act 2, scene 6 ends, it’s Romeo and Juliet secretly getting married in a chapel, with Friar Lawrence officiating their marriage.
Hope this helps!