Is AUTHOR wrong in the post ? POST : I've been friends with this guy for a few years now. Really close for the past year and we dated in the months leading up to his having to move away due to getting a new job in a different state. We decided to break up because he wasn't ready for long distance, but wanted to remain friends.
We texted almost incessantly that year up until a week after he left. We hung out together any spare moment we had. I was there for him through some really tough times involving people close to him and I can pretty confidently say that I was a great friend and girlfriend, even through times that he was especially shitty to me (I never took it to heart because of what he was going through). We'd said we'd keep in touch in various ways/be there for each other when he left. 
However the moment he started his new job he seems to have decided that he didn't have time for me. I had needed to call him a few times for what were necessary work continuity things (we had worked together and of course we chatted every time), but he started to sound annoyed with me for calling at all. He'd take entire days to respond to texts (I know he basically always has his phone glued to his hand). 
My last call to him was to keep him posted on some milestones I'd hit which he had previously asked to be kept posted on, and he started complaining he doesn't talk to even his really good friends that aren't immediately in his vicinity more than every 3-5 months unless he explicitly needs something. I took the hint and apologized, and it's been some time since we last spoke. 
Obviously, I hadn't expected to talk/text nearly as often, but to be told that he just wouldn't talk to me unless absolutely necessary was unexpected, abrupt, and hurtful.
I want to tell myself that transitioning to living in a new place is difficult/busy and maybe he just needs time, but it's painful to be shut out by someone you care about. 
We live in the digital age, and while I didn't expect a ton of communication, I didn't expect to be essentially ghosted by someone I considered my closest friend. It's not hard to text a person and I have many other people that I keep in touch intermittently with this way. 
Am I the asshole/in the wrong for having expected more from a friend?