Most Helpful Girl
Just take it as it is: friendly get togethers without intent to go any further.
He obviously enjoys your company, and it makes sense that he is not making any advances because he is leaving soon.
If you feel yourself falling for this guy, decide for yourself if you can live with the fact of just being friends or not. If not, you tell him what's up and that you would rather not spend more time with him because of your feelings.