Friend breakup

I’ve never really had close friends that stuck all my life. I finally made a friend that was very similar to me and had a kid close in age to mine back in September 2023. We spent a lot of time together and texted a decent amount. We helped each other being a shoulder to cry on when needed it felt like. We haven’t done anything since September and really have not talked. She says she’s just busy blah blah but is all over social media posting. I just have the gut feeling she does not want to be around me anymore and things have ended for us. I’ve been heartbroken and cried almost everyday the past few weeks. Like I’ve lost the only bit of girl hood I had in my life. I have realized that I was not her best friend, but she was mine. I’m just so sad….