Sorry for the late answer by the way.
First off, being young is hard and dating is alot harder in our young years. Starting to date in the 6th grade was young but it was your decision. Thats fine.
Secondly, are you having treatment for your depression? Help is always around and is always needed as you cant do this alone.
And thirdly, you should lay off the dating for a while so you can concentrate on getting your life back and getting rid of your depression. I have depression and I have found ways to heal it but it will never be completely gone for me.
But overall, stop dating until your sure your ready again, get some help with your depression and everyone dates and breaks up.