Re: how to handle this one
To be honest with you, the first thought that came into my head while reading your post was, "Why did he keep pursuing her when she rejected him numerous times? Normally, someone would hear 'no' once or twice and move on. Maybe he's the kind of guy who just wanted to succeed at the challenge." Now you're saying he travels around the world.... if I were you, I would not pursue him, because you barely know him, and how do you know he doesn't have girlfriends in some of these places? And what kind of relationship can you have, since he's gone half the time?
I feel it depends on what you really want. If an occasional lover is all you need, it sounds like that's what this guy wants. I am not sure why I think this, it's just the feeling I have from what you wrote. If you want a relationship, it's going to be really hard with all his travelling.
Maybe I am wrong and he does want a relationship but is finding it really difficult because of his work. Why not just come out and ask him what kind of relationship he's looking for?