He's from Eastern Europe, just like me, but we both live in Western Europe now.
You're totally right that he is reserved when expressing emotions - just like a typical person from Eastern Europe 😁 I think I'm so used to dating men from Western Europe that it's unsual for me to deal with his.
So yes, I'd say he's slow to open. Thank you, I'll try not to overthink and just see how it goes when he finally gets here!