Most Helpful Guy
As someone who forced a break up before having to move away to school, I can say that moving away is a big thing. My first week of school a guest speaker came and talked to us about love and relationships. Essentially the biggest thing I took from it was how hard long distance really is, the need for people to be together physically to bond and form chemical bonds in the brain is a real thing. Unless you have a strong bond already formed with that person, it's going to be close to impossible to maintain a distance relationship. Even with relationshionships a couple years old, moving away to start school is a major stressor. Not at all impossible, but tough. All through our 20's we are going to discover who we are, what we want, and change in so many ways. even if you really like someone, distance really is an ok and valid reason to not pursue, and sometimes end a relationship. We NEED physical connnection, and without being in eachothers lives physically, all to often we'll find that people change and may become non compatible.
I think your friend realized this. That long distance is tough, and when deciding to move away, many want a completely fresh start. One of the hardest lessons I've learned, and I really didn't want to, was that we will love many different people in our lifetime. Love, while special, isn't a one time deal. If you open yourself up you will find love in many different ways and different people. He may have been a great guy and filled your checklist of dateable attributes, and it truly sucks he had to leave. But I promise another guy will come along and be more physically available and in your life, and you will be all the more happy for it.
As far as him going no contact, Its easier to move on from something when its out of site and out of mind. He must have liked you quite a bit to want to take such drastic measures, if you guys hit it off so well. It's not you, its just a part of a healing process