I know it's been only 5 weeks but he said himself that we experienced together as much as others do in 3 years, which is true. But I know it's very intense and can backfire. He repeatedly said that it was going very fast but that we had no choice.
Moving would not be a problem. I travel light and I can easily relocate there and back if it doesn't work out. So that's not a problem.
Yes, he may indeed be a very different man sober and I may not love him anymore then. That's clearly a possibility. But I'd like to see who he becomes. There will still be some of the older guy left.

Well the first week he was the perfect boyfriend and he drank normally. He later told me that he wanted to impress me and he succeeded. He kept telling my that I was the perfect girlfriend.

Then we went to his parent's place and he started to change. He told me that all his exes said the same thing and that now he started to believe it. In the beginning he told me that they were all lunatics which I highly doubted. After our fights he told me he suddenly realized that he had been the problem, not them, that he had been a jerk and that what I said was exactly what his exes had told him.
When I helped him get to rehab, he told me he couldn't believe that after all the crap he did, I was still kind to him. He sounded very ashamed and desperate to get home

At some point in the third week he told me: "Why are you still here? Haven't you suffered enough?" I answered that without his rehab project I would have left already.
He said that he tried to put my interest before his own by driving me away and that I didn't seem to acknowledge that there was a problem.
I asked him if he loved me and wanted a future with me and he said that he did. He insisted that he didn't understand why I doubted that (yeah why on earth?)
But at other times he said that he didn't see a future because we were fighting so much (yeah because of the alcohol)..

But what I don't get is if he wants to end it why can't he just say some lame sentence men love : "I need time for myself", "My sobriety coach said a relationship would endanger my sobriety" or whatever. I made it VERY easy for him to walk away.
Why send casual emails or not write at all?
- Has he relapsed and is ashamed?
- Is he unsure about us and doesn't want to decide now because he doesn't want to make a mistake?
- Is he depressed?
- Does he want to end it but spare my feelings or does he already consider ourselves over and won't tell me because he's a coward?

The thing is I'm worrying now that something bad happened. He's sick after all. It's not easy to walk away when you're worried sick. And his parents are not exactly a big help. They don't like me and I don't think they are capable of truly supporting their son. They seem to bury their heads in the sand.
He already seems to want to move out presto from his small parent's place. As soon as he arrived he looked for a flat, a bank account, a job. He clearly wants to be independent as quickly as possible.

I'm really worried but maybe I'm just a fool.
If I have to let him go, I will but I really need to understand.