Fell hard and got ghosted

I met this guy online. He was amazing. Everything I have been looking for without even knowing it. Intelligent with a personality that matched mine like crazy. We were so similar it was scary. We figured it was because we had had so many similar experiences. He was also funny and liked to have deep conversations. I really felt a connection to him that was more strong than I could have ever imagined. In this world it is hard to find people you can relate to like that!
We talked for weeks and a lot! About our lives, what we believe in, how we see the world and what we want to experience. My feelings got so deep that I felt like I was addicted to him. I could not get enough. And he seemed to be the same.
Then out of no where my messages were not going through anymore. It has been almost a week now. Why? I know no one else can answer this but him, but I just don't get it.
It hurts so much as I will never know and I don't understand. I am trying to gather myself and get back to my life but I don't seem to be able to do that.