That's a tough one. I'm not one to say you did, or didn't do the right thing, only you will be able to determine that when all is said and done. You have expressed that he was there for you when you were feeling really depressed, and my feeling is that his support was important to you. Maybe what you need is some "timeout" in order to sort your feelings out. I can tell you, as a person who has suffered from depression, that it is common for depression to cloud one's judgement. Wishing you the best. If you need someone to talk to, I'm here for you.
Nadareal

if you didnt have "boyfriend" type feelings for him, then you did the right thing.

If your feelings changed, but you still cared about him, wanted to have him as a boyfriend, someone to be close with, the possily you want to rethink it.

If you are feeling good about it, then you did the right thing.

If the feeling were no longer there and you were treating him like shit..then I would say that yes you did the right thing. Not only for him but you. He needs to be loved and treated the way he treated you. You need to be in love and be excited to see that person who makes you feel good and feel like you are a new person. I wish both of you luck finding MR. Right and MRS. Right. You did the right thing. Sometimes doing what is best for us hurts. It hurts even more when we do it for others.

so you're single available?!?

I think you did the right thing. Cause if your feelings were not there then you just wouldn't be happy.