"Romeo and Juliet", Act Five, Scene Three

Friar Lawrence explains that Romeo was Juliet's husband, and that Juliet was a faithful wife. He tells how he married the two, and how their wedding took place on the same day as Tybalt's death..... which found Romeo banished from the city. The Friar then goes onto to say that what everyone believed was Juliet's grief over Tybalt's death was actually the Juliet's sadness over being separated from her husband. Thus, when faced with her parent's arrangement for her marriage, she came to the Friar for help and threatened to kill herself if he didn't. Juliet's threat hit home, and Friar lawrence then admits to supplying her with a draught that would make her sleep so soundly it would be believed she was dead.

The Friar then described how he wrote to Romeo, told him of the plan, and requested he take her when the potion wore off. Unfortunately, communication was mixed and Romeo killed himself..... leading Juliet to do the same. This is the story shared by the Friar.