I'm soo confused... Should i break up with him??

Ok me and this guy have been dating for about a month now. He's 19 ao i'm 16. He's kinda my 2nd cousin actually related i guess..anyway, i found him on facebook on feb n since then we've constantly chatting and messaging eachother..he also asked me for my number and after that, we texted 24x7.. My parents found out about it and thought we were having an affair and i ured them that we were not although i really liked him at that time and i'm sure he felt the same way. They warned me not to get in a relationship because he was a really bad guy..like he got kicked out from school twice for getting into fights.. He's so accident prone.. He got into accidents 3 times because of reckless driving..he smokes and drinks like hell..he even smoked weed.. Bt the thing is, i know he's not that bad guy deep inside.. Anyway, later on..he told me he liked me and i told him the same way too..we see eachother once in a while and all.. But lately, i feel like we're drifting apart..i mean..we text ALL the time..but i kinda tell that i feel sleepy and all so i'd go.. Sometimes i feel like i don't give him the time he deserves.. I know he likes me a lot and has done a lot for me..he said he would stop smoking and drinking and bike racing just for me.. But sometimes i think why am i even dating such a guy? He's done illegal stuff... But i really like him..and if i tink is real, that we are drifting apart..what should i do? Should i talk to him about or break up with him?