why am i easily replaced?

why does this have to happen to me? why do i  have to constantly be replaced by everyone who has a partner. i could be their friend before they even met them, before they got together and once they have a partner or whatever i'll be replaced. it sucks. quite literally makes me want to do not such safe things to myself. i had a best friend, and it doesn't even feel like me and her are friends anymore because all she does is  just talk to her boyfriend constantly, over and over and over again. ive spoken with the boyfriend, and he really doesnt even  seem like hes all that. she even comes to me sometimes about how hes annoying and how she sometimes even wants space from him. how he always wants to talk to her and things like that. how hes too  obsessed with her and how she doesnt really even like it. if thats the case, why do you spend your time with him constantly, all day, everyday just as obsessed as he is??? how are you going to complain when you literally do the same thing? u  talk to him and only him and ignore me, but pay attention to me in school. you don't even really care for anything i have to say anymore. you're so dry.  what is the point of making friends, if all of them lie about caring about you and none of them even really mean it? am i spoken to for the sake of boredom? what is a true friendship? what is a 'true' lover? how do i know its real? how do i know they really care for me in the way a friend would? are they talking to me when they're only free? are they freeing up their time for me ? do they find me annoying but continue to keep me around, anyway until they find someone to be the new ex, the new best friend who they throw away sometimes? i actually don't understand why i have to sit  and deal with all of this? should i delete social media  throw my phone in the lake and find a way to end my misery???? what more else is there to say??? what more else is there to do???????????????????????????????????????????????????????????????????????????????  why keep on trying anymore when  its the same outcome the SAME PAGE the same EVERYTHING WHAT MORE ELSE IS THERE TO FUCKING DO?!?!?!?!?!??????????????????????????????????????????????????????????????????????????????????????? CRY? ROT? DIE? GIVE UP I DON'T KNOW ANYMORE. what is real and what is fake? what is love and what is lust? who is a real friend, who can i trust. theres nothing anymore for me out there. i thought i found true friends but i didnt. my only friend that i have in real life doesnt even care for me anymore. theres nothing for me to do. im so done. im so finished. i could care less. let me just pretend i dont care when the cycle clearly bothers me and eats at me in every possible way shape or form.