HELPPP before my heart gets the best of me and i do something stupid :( ?

i really like this kid .. we are seniors in high school .. and im not sure if i should pursue him or let it go. i have always been pretty innocent and straight edge while hes into drugs (alcohol, marijuana, adderall, cigarettes, and mushrooms) hes kinda impolite and disrespectful and doesnt really care much about school .. however he is really really smart and a kid who means well. we are basically opposites though lol .. but im like infatuated with him and i dont kno what to do .. i feel like im falling for him and i cant lose him :( even though we barely know each other and hes probably into like slutty girls who are also into drugs like him :'(