AITA for treating someone different than how my friends treat him

I’m normally pretty chill unless it comes to super important things like a really important test or something. I want people to succeed. The only reason I called him on it was because we were filling out a study guide for the final in the class and he was just playing his DS not doing his work while I got in school suspension for checking the time on my phone while doing my work. I’ve known the kid since elementary school. And I genuinely want him to succeed. And I am kinda overbearing in the since that I want to help push people forward and for them to better themselves. And I know I should change my bluntness. It’s hard because when people review something of mine. I want them to be completely transparent and honest.

/r/AmItheAsshole Thread Parent