Message me for more details HELP

Ok so I’m probably going to get hate but ... I’m not trying to go into to much detail but basically I need to break up with my bf he’s 18 I’m 15 he’s in Cali I’m in NY I need advice and I CAN NOT get it from my family . He is HEAVILY involved in a gang and all his family is deceased he doesn’t have anyone except for his one friend who my best friend is dating and I don’t want to impact her relationship by mine ending but Ik it will. He ( my bf) has also stoped taking his meds for anxiety and depression and has tried to kill him self three weeks ago. I’ve been with him for five months six in November 2 and ur wanted to end things for about a month and a half I’m just scared that if I do he will kill him self or something and his fellow gang members have told me that I can’t leave him for a “ stupid “ reason or they will come for me and I can’t break his heart I just don’t know what to say or do things are more complicated then this but you get the idea plz help me