I want to say, too, that I get emails about this type of thing ALL the time. It is common for people to think "I am at fault" and worry about what they did. Often though it has nothing at all to do with you. Maybe their old girlfriend who they adored called them back and now they are on the road to recovery. Maybe their work got very busy and they are having a blast working on their dream project. There are all sorts of scenarios that happen that are completely independent of you.
So yes, I think you took the best path! Do not think of ways to blame yourself. Something in life happened and it was not meant to be. Move on to the paths that are available to you, and embrace what the world has to offer!