What does my dream mean?

so a few nights ago i had a dream that i was at my friends friends house an it was really weird i dident kno this family i was just there with mi friend but i guess they had a son who had just died an me an mi friend were running around da house an out of no were this boi was standin in front of me an i tried to hide an mi friend said wat r u doin i said hidein u don see dat boi ..what boi? so then i new sumthin was up so he told me mi step father killed me an i kno u dont kno m an i dont kno y u are the only one who can see me an talk t me but i need your help..im still alive in mi grave i need u to tell mi mother wats goin on ..i just looked at him stupid..like i dont even no ur family u just died an u want me to tell them that but anyways i told his mom she dident believe me but then she did so we went to were he was buried an gothim out an he was alive ....SO IM JUST WOUNDERIN WHY I WOUL HAVE A DREM BOUT A DEADBOI I DONT KNO AN IM THE ONLY ONE WHO CAN SAVE HIM AN TALK TO HIM???sumone help.....