Do you think that I am ?

My school started in August, and I have been having a tought time in Math. I started cheating of some guys test, and I got a 100. The trouble is, he knew I was cheating of him, and he threatened to tell the teacher, unless I had with him. So I did. I didnt really care, he's somewhat cute.He told me I could cheat anytime, as long as I give him what he needs. Im only in tenth grade, and I feel like im someones ual slave. I dont know what to do!