How do I break up with a girl who has done nothing wrong?

I agree you should talk to her. But don't take her anywhere public because yes she's going to be hurt and she's probably going to cry. And making that a public scene could make it worse! Do it one on one and with no one around! But talk to her. Make sure she understands where your coming from.

The longer you postpone it, the more hurt she'll be. Stlll though, the pain it'll cause her is unavoidable. Break ups are hard and they hurt, especially when you are on the receiving end. Be honest with her, tell her exactly what you told us, that although she's an amazing girl you don't see yourself in a relationship with her anymore. Be open and talk with her. End it now before she falls really hard for you and it's so much worse.

What I would do is take her to a place,like a park,where we won't get disturbed,and just have a long open discussion,tell how you feel,about her and where the relationship is going,and find out how she feels,and I think from there you both can come to a decision,hope that helps :)