Am I doing the wrong thing?

I'm slowly distancing myself from my friend cus she said that we aren't best friend but two people that are close. I respected that, I thought about it and I'm not trying to be petty, but I gave her what she wanted... So I started to treat her how I treat my other friends... Honestly it breaks my heart cus she's the only person I could talk to that feels genuine, and tell my every thought without being judge. But it does feel like its for the better.