I don't have any "evidence" to back this up on hand (too tired to search for 
it now), but I always felt that Keiichi's hesitance was largely based on fear 
that she'd have to go back one day.  Plus, he seems to have a hard time 
dealing with loss...remember the puppy story?  And that was just a 
puppy...(spoken like a terminal psych major!).  Although at first, there was 
undoubtedly some question in his mind as to whether she really wanted to stay 
with him, I don't think this is as important later on.  Can anyone find 
examples supporting or refuting this?  I'll try to look into this more 
tomorrow, too.
				Suka-Chan