We are not doctors so none of us here could tell you whether you have a mental illness or not. What I can say is that even if you do not mean it to be, this relationship already borders on inappropriate. Only because it seems like you are making it that way. You can not be friends with a middle school student, period. It is appropriate for the student or you. You need to focus on friends in your own age group or circle. and he needs to do the same. I understand why your boss is concerned.