Juliet's parents and Paris are set on Paris and Juliet marrying on that Thursday. Little does everyone know that Romeo and Juliet have already been wedded. Although Juliet disapproves, Paris states "My father Capulet will have it so, And I am nothing slow to slack his haste."
Juliet and Friar Lawrence are talking about her arranged marriage. Juliet is so devastated and in love that she tells him "Or my true heart with treacherous revolt. Turn to another, this shall slay them both." She states that she will kill herself for Romeo.
Friar Lawrence hands Juliet a potion as a solution to this mess. It supposedly was able to make Juliet fall into a coma for 42 hours, making her perfectly fine when she awoke. This is a complication because we're not sure if this potion will work, or she might not be able to wake back up.
Juliet is unsure if Friar Lawrence had evil intentions. Would she never wake up? Would she never see Romeo again? That is a question Juliet and the readers both were questioning in their head. In the end, Juliet drinks it despite her fears.
The nurse comes to Juliet's room telling her to get ready. Once she sees Juliet on the floor, she immediately thinks Juliet is sleeping and is lazy. After calling her name and shaking her, she finally realizes that she is "dead."
The nurse calls Capulet and Lady Capulet into Juliet's room. They see Juliet lying on the floor and are devastated. Paris finally comes in and is upset that the day he's been waiting for was ruined. He stated "Have I thought long to see this morning's face."