I want to kill myself

I am tired like seriously tired of people. Let me tell you my story, I am a young teen that only made one mistake that ruined her life : I fell in love ,yeah people make me feel like I did something wrong when I loved someone so bad . Well this person made a mistake, he hurt me but then he fixed it ( everybody makes mistakes we're not perfect ) before we are back together my "friends" told we shouldn't get back together...ext but I love him so I couldn't take it anymore and we're back . Later today I defanded my bf's bestfriend and then they started yelling at me and telling me that I've changed since we're back .
It's not their first time saying this , they always remind me that he hurt me and always talks **** about him in my presence, I feel humiliated, and today when they yelled at me I hold my tears then I was telling my bf and I just started crying because I couldn't take it anymore. I am really tired and I get sucidel ideas and I just wanna die because they make life seems like hell to me .and what makes it worse that my bf 's family are moving out and of course he is going with them so I try to enjoy our last weeks together but these problems are making me crazy . I cried so bad today that I feel physically sick. Helpppp ! Please help me !!!