It sounds like your relationship with this guy is very casual thus far, so I wouldn't started investing very much in it at all. If you want to move to his city, definitely do it for yourself and the promise of a new job - I don't think I'd factor him into that equation at all. This quote doesn't quite apply to your situation, but I always keep it in mind anyway. In the immortal words of Lady Gaga:

Some women choose to follow men, and some women choose to follow their dreams. If you're wondering which way to go, remember that your career will never wake up and tell you that it doesn't love you anymore

In any case, it's nice that you're experiencing good chemistry with this guy so far. That being said, my experience is that if a man really wants to be with you, he will find a way to make it happen - and if he hasn't make overt attempts at making it happen, then you're probably not on his mind a ton. Nothing wrong with exploring chemistry, mind you, but you have to assess the risk to your feelings as well in the very real possibility that things don't work out the way you want.