Hello, I am currently a 15 year old male high school student and I have this one person in my AP Seminar class. He keeps talking to me even though I have made it clear that I am not 1nterested in developing a friendship with him as I say "ok" or "alr" to everything he says, and it feels like he is just saying random things just to have a friendship. He keeps asking me the same question and interrupts me when I am talking to my real friends. He clearly lacks social skills as he had made fun of my friends because his father had abandoned him, and my friend being the nice person that he is told him that he should not make "jokes" like that to a person that he is not close friends with, saying he might get bullied by other people if he keeps behaving like this. While I do feel bad for him as he does not have any friends (well, he is usually trying to talk to people but people are not 1nterested in him), he must stop being clingy. The reason why I made a post here is that I want to tell him that I am not 1nterested in being friends with him without breaking his heart, I am that short tempered short friend and I am afraid I might explode and break his feelings if he continues to act like this.