Hamlet' s friends were anxious about him and came to look for him. They found Hamlet kneeling down and looking up at the dark sky praying to God. Hamlet noticed them coming to him. He stood up and sincerely asked them not to tell anyone what had happened that night. They all agreed and made a firm promise not to tell anyone about it, swearing on Hamlet' s sword.
That very night Hamlet decided to pretend that he had gone mad in order to have a better chance to kill Claudius. He decided not to tell his plan to any of his friends except Horatio .
Since Hamlet saw the ghost, he had often thought of his dead father and of his promise to the ghost. He became sadder each day. He was not a young, merry prince as he used to be. Before his father' s death, he was interested in many things, such as books, art, music and plays. But now he gave them all up. To everyone, he seemed to act very strangely. He became rude to everyone in the castle and behaved like a mad man.
He hardly ever spoke to Ophelia , a beautiful lady whom he had deeply loved. Before, they would talk happily and take walks in the woods near the castle. He would talk to her so sweetly and gently that Ophelia was deeply in love with him. But now he was quite different. Therefore, Polonius, Ophelia' s father, did not want his daughter to love Hamlet anymore because of his strange behavior.