Your feelings are completely normal and it might be strange if you weren't having them. Being fired can be like a mini death. There is a part of you that you tend to identify with that is stripped away from you. You bore witness to someone losing a large aspect of their life/livlihood. Many people so identify with their jobs that they feel that they "give them a sense of worth and meaning." That said, you honestly never know what might come of Eddy because he was fired. Maybe he will get on another life-track that leads him down a more suitable path for him. This could be the best thing that ever happened to him, in the long run. In the short run, it probably sucks a whole lot. You did nothing wrong though, but having an empathetic response is normal. Congrats on being human and not a dick. That's a good thing.
I once got the axe the Friday before 9/11. Everyone else on the team got let go within four months. However I was able to get a gig from my old temping company before the economy crashed. Within a year I was making more than I had before, and I was able to move my then-girlfriend to Boston. Some of the others were out of work for a couple years: I was out for 2.5 weeks. Many years later I was out for nine months, but I was still making more on unemployment than I had been at the job that let me go nearly a decade earlier.