What happened in act 3 scene 5 of romeo and juliet?

Just before dawn, Romeo prepares to lower himself from Juliet ’s window to begin his exile. Juliet tries to convince Romeo that the birdcalls they hear are from the nightingale, a night bird, rather than from the lark, a morning bird. Romeo cannot entertain her claims; he must leave before the morning comes or be put to death. Juliet declares that the light outside comes not from the sun, but from some meteor. Overcome by love, Romeo responds that he will stay with Juliet, and that he does not care whether the Prince’s men kill him. Faced with this turnaround, Juliet declares that the bird they heard was the lark; that it is dawn and he must flee. The Nurse enters to warn Juliet that Lady Capulet is approaching. Romeo and Juliet tearfully part. Romeo climbs out the window. Standing in the orchard below her window, Romeo promises Juliet that they will see one another again, but Juliet responds that he appears pale, as one dead in the bottom of a tomb. Romeo answers that, to him, she appears the same way, and that it is only sorrow that makes them both look pale. Romeo hurries away as Juliet pulls in the ladder and begs fate to bring him back to her quickly.