Wow, thats how i felt with this 1 friend, nice job, 5/5

"I thought you were my friend,
who would be there till the end.
I was wrong, you see.
cuz you talked about me"
-Change cuz to because, Otherwise you could simply put it in the slang category. :)

"I guess this is goodbye
A message before my phone dies
I thought you were true
now i wish i never met you"
-Capitolize i's!

Overall, nice poem. Of course we all can relate to having a friend who wasn't as great as we thought they were in the first place. 5/5.