My friend's cousin died. What can I say to comfort him?

Try to keep him from being negative and comfort her. Take him to see chrysanthemums in autumn, and they will bloom next year. Don't learn from Lin Daiyu. There are actually many beautiful places in life. Open your heart and look at the world, and you will find that your sadness is nothing. If his cousin were still alive, he would not be happy to see him like this.