if it is lust, there must be a way to keep me from it

??

Hi
I am 18 years old and I have crush on a person who is in his mid-fifties. I am so obsessed with him that I can't sleep, I can't eat and just think about him all day. He is a teacher in my school and he likes me as a student. I really want to hook up with him but there is a problem. HE IS STRAIGHT and MARRIED and has 3 kids. He is the only person I have ever loved and I love him so much that just can't stop thinking about him. I want to have SEX with him but I am afraid that he might refuse. Can you please advise me (on how to persuade him to have sex with me ).

Thank you