I would have been disappointed too. If a friend reached out to me I would always reply, even if just to send a 'holding' message to say I would give it some thought.

I understand why you unfriended him, you felt vulnerable when you saw him liking the usual nonsense facebook stuff and not replying to you. I agree facebook is a very limited medium and one we sensitive people need to be careful with.

I agree with OE that you should not let this stop you reaching out to others - and it was brave and positive of you to do that in the first place.