Why did he give me his address?

I confessed my feelings to a crush, he said he had moved to another country, then gave me his address and said I could leave him any words if I would like to. Why? I already have his email we can communicate there using it.. he didn’t invite me over to his place but said I could leave him any words to the address…

I don’t understand
Was he rejecting me? Like hinting that “I’m far away, so we won’t have a chance” but honestly he could simply just say thank you then that’s it..

Why did he give me his address?
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