friend advice 😞

so i’ve been friends with my best friend (M) since kindergarten and now we are both in 8th grade. we always used to facetime, sit together in lunch, talk, and do everything together. but now there’s this new girl in her life and we shall call her D. so D and M are now “besties” so you can say 🙄. sooo now M never facetimes me, never sits with me, never hangs out with me, and we barely talk. the only time she’s with me is when she needs something from me. it’s crazy. and i’ve been getting annoyed. she is never there when i need her. and she is always rubbing it in my face on how she’s best friends with D. they do everything together, sit together at lunch, they have songs they sing together, they facetime, and all that shit. and i’m just the girl that M is holding on to whne she needs soemthing. i’ve tried multiple tomes to address this with M and she always says “nooooo wtffff” or “nah you more than dat”. i just need some advice because it’s been getting out of hand. yes i sound very jealous and i’ve always been like that. i’m a sagittarius and i’m jealous of anything and everyhting 😂😂😂

sooooo yes i’ve been getting all mad because it’s not fair i’ve been there for M through all her family problems and she just goes and trades me off. and she does so many things in front of me PURPOSELY to make me jealous. she always sends me pictures of Her and D together and sends me the paragraphs she sent her. and it’s not like i was a bad friend. i was like that with m too!! i’m very jealous but i need advice. do i just let go of m? should i move on to someone else? any advice would be helpful