I'm a disgrace

I just cut off all ties I had with a good friend of mine on impulse. Really, all ties. Deleted, just like that. Without even waiting for a reaction. Why? Because I couldn't take it anymore. That relationship was but a chore without any pleasure. And I don't even feel bad about that. I realized I don't care for that person anymore. A person not long ago I held dear. Someone very close and special to me, someone I genuinely cared about with all my heart and soul.
Am I a bad person? Am I a cold heartless mess? What have I done and why do I care so little about it?

Like the title says, I'm a disgrace...