Ok, so since the summer holidays she has rarely ever messaged me back. We used to always message each other for hours every day after school but she now only bothers to reply back to my messages like once in a month! I'm pretty sure that she doesn't hate me because we still talk and hang out together at school.
But the thing I find the most annoying is that she always complains that she's too busy messaging her 'other friends' on Facebook until 2am and yet she never replies to me. I feel like I'm getting replaced by her 'other friends' especially this one girl, let's call her 'Sophie' (not her real name) who actually became friends with my best friend, let's call her 'Jessie', through me. At first, Jessie didn't like Sophie and thought that she was a negative influence on me, which made me realise that Sophie is actually quite manipulative so we fell out. However, a month or so later, Sophie and Jessie became really close and I feel kind of left out and as if Jessie lied to me so that she can be friends with Sophie (who now doesn't like me) instead.
I talked to Jessie (best friend) about this at least twice since the summer (when she basically ignored/didn't bother keeping in contact with me), and she said that she was sorry for being a bad friend and that she'll try to reply to my messages, but she never does and I swear she just talks endlessly to Sophie instead!!
Btw. Sophie goes to a different school to us. Jessie says that she's only trying to be fair because she doesn't see Sophie at school so she talks to her after school. But the thing is, we don't even have time to talk to each other in school either because we're both so busy with A Levels!!
Short version of above: My best friend for 5 years no longer replies back to my messages and she knows it. It's not because she's busy because she talks to other people instead. I feel like she doesn't care about me anymore and is replacing me with other people.
Is she really a true friend?