Romeo & Juliet

Starting out
Romeo can be found in or near Varrock square. Speak to him and he asks you to talk to Juliet.

Speaking To Juliet
Talk to Juliet, she is located on the top floor of the house (contains cooking icon) directly out of Varrock West gate. She will give you a letter to give to Romeo. Take that letter to him in the same place you talked to him before. (If you cannot find Romeo, he may have wandered into the Varrock General Store)

Father Lawrence
Romeo reads the letter and doesn't know what to do. He suggests going to Father Lawrence, who is located in the church directly east of Varrock Palace. Speak to Father Lawrence. He mentions a cadava potion, and asks you to speak to the Apothecary.

The potion
MAKE SURE TO TALK TO THE APOTHECARY ABOUT THE POTION BEFORE GOING TO JULIET (If just using the berries on him)

The Apothecary can be found in southern Varrock, in a building behind the sword shop, just west of the bar. Speak to the Apothecary and he will tell you he needs cadava berries. The berries can be found just West of the Varrock East Mine. You will need to pick from the cadava bush. When you have them, return to the Apothecary and he will give you the potion. Drinking this potion yourself would resrself out.

The plan
Now, head back to Juliet and give her the potion. You will now see a cut scene of her "fingering herself", though she really falls into a coma. Go back to Romeo and tell him that he must rescue Juliet from the crypt. Apparently, he needs someone to accompany him.

To the crypt
You will now see another cut scene of you entering with Romeo. When he sees Juliet's cousin, Phillipa, he forgets all about Juliet and falls in love with her. You have now completed the quest! If you talk to Juliet again she will seem fed up with Romeo, as for Romeo will have fallen love with Phillpa.

Reward

 * 5 Quest points

Trivia
Romeo & Juliet is one of 5 quests released on the launch day of RuneScape.