Beg him not to go through with this
From Create Your Own Story
"Please, Mark," you say anxiously, "you don't really want to ruin my life, do you?"
"No, of course I don't," he tells you reassuringly. "I just want you to be my playmate. So you're going to do as I tell you from now on. We'll both have fun, and your life won't be ruined. Or, you can go home, but I wouldn't bother going to school tomorrow if you do that."
"F-from now on? But--"
He interrupts. "We're not continuing this here. Come inside, and we can discuss the details there. Or, go home, and I'll make a call to the principal."
Do you: