Yandere boy~

Holo peoplez, im kinda new to writing storys so it might not be that good but i tried, but any way this is how the story goes:
its already 3 weeks in of your 2nd year of highschool when a new exchanged student comes in math class all of the sudden, you both look at each other while you, {the listener/ reader} smiles at him and waves, he waves back and the concealer {who was with the 'new student'} asked for valenters to show him around, you volener and show him around. A few weeks passes and you start to know the 'new student' but you keep hearing rumors about him saying "he isn't what he seems" and people had him in middle school and he was a phycopath and he brought a knife to school many times... Now that your in your 2nd year of highschool you think that the rumors are false, that hes different and hes normal like all the other students......Or is he?