ROMEO: Nurse, commend me to thy lady and mistress. I protest unto thee –
NURSE: Good heart, and, i’ faith, I will tell her as much: Lord, Lord, she will be a joyful woman.
– William Shakespeare
Romeo and Juliet, Act 2, Scene 4. When Romeo starts to swear to something, the Nurse cuts him off and assumes that he is swearing his love for Juliet. Taking it as an offer of marriage, the Nurse praises his "good heart" and says that Juliet will be a "joyful woman." Moments later Romeo does confirm his intention to marry Juliet.