Wow, yeah. This was actually really good. I'm sure everyone has/had a friend like this. This is probably something everyone has to go through... especially in high school! That's where you find your true friends and your "fake friends". It sucks, but it happens, and you wrote a really good poem about it.
I'm sorry to say that this is more of a lecture, or a talk than a poem. I'll refe to it as a lecture.
You pass down a strong message to the other character in the talk. He's not trying hard enough and you can't live this way.
The words are carefully chosen and fit every argue or situation.
I'll give it a 5/5 as a lecture, but sorry, this is not a poem.