This is a form of cyber bullying this is a friend telling his/her friend that he/she hates them.
This is another form of cyber bulling that takes place on social media and is released to the world for everybody to see.
This is a comment on YouTube this girl is being bullied by one of her viewers.
How to "backspace" Cyber bulling
One way to try to stop this is telling your friend that they should tell their parent or an adult. Ask them to take a screenshot of the cyber bulling for proof of the bully. They can also report to your guidance teacher. Tell your friend if they you have been cyber bullied. Tell your friend about your situation in cyber bullying. That is how you can save your friend.