My friend keeps on writing it, yet he won't tell me where it's from.
He says the third line from the top says : "for what reason."
EDIT: Adele C. seems to have found the actual language. So go give them some love.
I feel that after pouring over possibly hundreds of fictional languages trying to find an exact match I can confidently say that your friend made the language up on his own. That being said I have spent even more time trying to decipher it and below is what I have so far arrived at.
"Life is strange why why today for what reason (?)y does this (?)eey happen in (? 'sc' maybe?)hool is hori(?)l (misspelled horrible maybe?) is (?)lor are we not"
I am fairly confident in most letters though a few are guesses based on letters surrounding them. Based on the content that seems reasonably accurate, I think there might be more to this message that is either scrambled, cut off, or whatever else. My current library of letters can be seen below. Excuse the messiness of it.
If you can improve upon this, please do.