So I have a guy friend who used to be super nice! He then started being a jerk to me so I started doing it back because I was having a hard few months. Then one of my friends told me he called me nice. Now I feel like a jerk! What should I do?

When someone is mean to you, you shouldn't be mean back. That doesn't solve anything. What you should do is just talk to him, and apologize, and figure out why he was atuação like a jerk. But seguinte time, just turn the other cheek and mover on.

I know it may be hard, but go apologize & if necessary (you feel like you should), tell him that you were just having a rough time. Also possibly ask him why he was being so mean to you; maybe he was going through a difficult time too or maybe he even likes you (if this is the case, don't be afraid to tell him how you really feel about him - whether you just want to be friends, or if you're willing to give him a go). Good luck & hope it all works out.