What to do after being told your best friend only sticks around because they pity you? (friendship breakup)

When told something like this, something to do is to think about why your friend may think these things, and what they may be thinking about themselves. People who say things like this are often insecure about their own issues. And worry the effects of loosing you. However no matter the reason, this is still toxic behaviour, and we have to look after ourselves first. You could of course address the issue with her. Or maybe apologise that she had these insecurities, and feels she has to bring others down in order to feel good about herself. Just remember to take care of yourself first

Ask your best friend and if that's true then remove yourself from that situation, do not hate them but be grateful that they were honest, deal with the pain and know that it's okay to go through all those emotions, you will be okay and you will heal in the end, it might hurt now but it won't hurt forever, you will find people who genuinely care about you and will be with you because of who you are. You got this, you are loved and cared for always never doubt it. What you best friend says matters.