Teacher kissed me? 10 points best answer?

Lets call him. Mr A..... My english teacher is so cute, everyone loves him he has the most amazing smile ever and eyes! I'm so attractted to him i can never get him to leave my mind, He always teases me in class and tells me i'm one of his favorite students. One day after school i had detention and the teacher who gave it to me had to leave for an emergency and filling in for her was... Him.... he was teasing me about being a 'naughty girl' for being in detention, we started flirting a lot and then he said that ;its too hard for him to be around me because he can't control himself because of the attraction, so we kind of avoided each other for a while, we were going on a school trip and he was one of the teachers picked to come alone, it was an over night trip, we tried our best to keep away from each other but it was killing me inside, one of the guys who came was really flirty with me and kept calling me gorgeous and Mr.A was beside us and looked really mad and jealous and told the boy to ''leave me alone'' when we got back it was awkward in class i stayed back to collect my project and he said 'He can't take it anymore' and he kissed me and had me pinned up against the wall, it was so sexy he was grinding on me and i was so turned on i was nearly moaning, i stopped because i relised what would happen if we got caught, i could never do that to him, he said he would risk it for me but i really don't know what to do, we haven't said a word to anyone about it and we stopped teasing each other when others were present. WHAT CAN I DO? i really like him?:(