Crush on teachers help?

i have been getting detention on porpoise of a teacher which i have a bit of a crush on and he said if i don't do my work he his going to tell my parents about me not doing my school work i am 13 and he is 20 and he is cute plus its school work not homework its hard to get over him because he rally cute i also like getting the detention more because he caring and i know it probably wont work out plus i flirt with him plus his name his mr shaw kanahooka high i mean he works at kanahooka high school in Australia NSW i have being hanging with my boyfriend mat and my best friend jess