Hello,
I pretty much agree with everyone else. I would wonder what the "if" meant, too. If you are close enough in your relationships to consider marriage, you are certainly close enough to ask him what he meant.
Also, trying to learn some of the language is a very good idea. However, you may be able to also get an address and drop a card to them. Something friendly and upbeat. However, understanding the culture helps, since what one thinks is friendly and upbeat may be an insult to someone else. Still, even a note card that you have taken the time to translate into their language.
I found a site that you can translate free. Just search free translations. Of course, since I didn't understand what I read, I could only hope it was correct.
I wish you both a long and joyous relationship.