<p>Well, if he’s interested in you–and it sounds like he is–then giving him your number would make him extremely happy. While it might be hard to talk while you’re in France (time differences and all), give it to him now so he knows you’re interested in continuing conversation.
Even if you don’t get to talk that much, a couple weeks isn’t gonna kill your chances.</p>
<p>However, Bry’s suggestion works too.</p>