We met on another forum, literally the day after I was going through a pretty vicious break up.
He noticed on a status I said I was having a 'rough time' and though we hadn't talked much before he was nice enough to message me asking if I was OK.
That one message turned into weeks, to months of talking and he easily got me through my break up.
We were getting really close, learning lots about each other.
And one really vicious fight where I had been drinking (not a ton, I'm really not sure what happened) but ended up blacking out and saying a ton of really cruel things to him for nearly no reason, before becoming completely delusional by the morning to the point of being hospitalized.
I begged for his forgiveness, and after a week or so he finally warmed up to me again.
He tells me his biggest secrets and claims that he loves me but. . .

It kills me that he can detach so easily.
I go a day without hearing from him and I'm in shambles and confused.
I typically fall hard, and fast, and once a person has my heart they have it not only until they break it, but until I have someone else to give it to.
Recently he's been even more distant than usual it seems, I could be being paranoid, but a friend of mine who knows him as well thinks its because I'm going to be moving soon, and I'm going to be moving rather close to him.
He's vocalized he's not ready to meet me yet. Due to a wide spectrum of issues, issues I can understand, but I would do anything for him.
And he knows that.
I would never rush him into meeting me or a relationship or anything, this move is something I'm doing for me to better my life.

I'm just so lost because it hurts when he disappears, and the behavior is so similar to how my ex was acting right before we broke things off. But he comes back and acts like everything is fine again, when its so not to me.
And I don't know what the issue is, or how to ease his fears.
Is it the ASPD?
Is it the fact that I'm moving soon and he's scared I'll want to meet too soon?
Or is it something else entirely that I don't even know about?
I fear most that its someone else. . . especially because since we're not 'official' he has every right to be with someone else if he pleases.
Its not exactly something that's in is character, but its still a fear.
Sometimes it doesn't even seem like he has ASPD to me. . . I thought that meant a general detachment/lack of connection with people. But he's like a light switch, sometimes I'm his stars and moon and other times I don't even exists.
Can anyone shed light here?