My sister boyfriend just tried to start a fight with me and other thing s?

lets so my sister and my family know i smoke cig's so like my sister rach like comes to my room and asked to get like seven cigs off me and say ok but you got to take me to get a pack in a little bit so she said ok and we had a deal. but she does not take me to get a pack she did not have her id so like i asked her boyfriend to take me real fast to the store which is a block away and he's like no i don't buy cigs for under aged person which brings me to point A. he got me a pack like three months ago because i gave him well he got 20 dollies for gas and gave it back but still the point is he got something and that killed all that talk of the high and mighty. so it;s like ok to buy me a pack wn you need something from me but not ok wn your girlfrienleaveses me with four cigs to smoke well that was bull **** so i told him were he could stuff it right were the sun don;t shine you get my drift well he tell me to go **** my self and he starts to get in my face and tell me he going to break my jaw and send me to my grave and **** realy scary coming from somebody that just got in wreck so a save the mental note to self to kick hs *** lay and so now here my dad show es up who does not know that i smoke so he tells on me for asking him to buy me a pack after he's bout one before for me so im totally pissed and then tell my parents that he bout me a pack three months ago so sorry this was so long need to know wat to do about all this