Don't know what to do about an ex best friend

Hi. I'm currently in year 12. Back in year 9/10, me and this girl X were best friends. I had never met anyone like her; she was like a girl version of everything I loved about myself. We talked about anything and everything, no matter how personal, every day, until late into the night (usually 2-3AM), but something changed and we stopped talking as much. I've tried since then to get things to how they were before but it hasn't worked. I'm considering telling her "Thanks for everything, but I don't think we should be friends anymore" (actual message much longer but that's the gist of it. I do love her, or at least who she used to be, but I don't have that girl anymore and the longer we stay like this, the more I delude myself into thinking she'll come back; that we'll go back to who we were. She didn't even tell me about a halloween party she invited some people she didn't even know to (only found out through mutual friend inviting me and even then X didn't seem like she particularly cared she "forgot" me (which I don't think she did)). She didn't invite me to her last bday party. I just feel like she cares abt what we had and getting back to it way less than I do, so I need to move on for my own sake. What should I do with her?

I had a same issue back in year 8, well i'm currently in year 11 and have gone fully over it. I had this best friend, me and x were also inseparable for years but then one day x started going with this other girl, they both never talked to me, didn't say hi, just like you, i wasn't invited to parties or anything. It was a very hard year for me. Eventually the girl who started it all left the year later and i was able to fix thing with x but x now has her own friends and i have my own, now i still talk with x but not like we used to. I was lucky because some classmates started to come with me and eventually became friends and saved me from sadness and losing hope. I hope it helps, but just get over her, i'm sure you'll find a better person.

That's the issue. I won't find a better person. She's perfect man.

Hi. I'm currently in year 12. Back in year 9/10, me and this girl X were best friends. I had never met anyone like her; she was like a girl version of everything I loved about myself. We talked about anything and everything, no matter how personal, every day, until late into the night (usually 2-3AM), but something changed and we stopped talking as much. I've tried since then to get things to how they were before but it hasn't worked. I'm considering telling her "Thanks for everything, but I don't think we should be friends anymore" (actual message much longer but that's the gist of it. I do love her, or at least who she used to be, but I don't have that girl anymore and the longer we stay like this, the more I delude myself into thinking she'll come back; that we'll go back to who we were. She didn't even tell me about a halloween party she invited some people she didn't even know to (only found out through mutual friend inviting me and even then X didn't seem like she particularly cared she "forgot" me (which I don't think she did)). She didn't invite me to her last bday party. I just feel like she cares abt what we had and getting back to it way less than I do, so I need to move on for my own sake. What should I do with her?