How can I make it easier for our relationship even though I'm leaving?

HEY, so I'm 18 and just graduated high school yesterday, I haven't been in any sort of relationship with any guy in the past 2 years. Not because I didn't want to, but because I never found anyone. It's been a very lonely 2 years, but whatever I dealt with it. I remember in september this guy who came into a store I work at and I just clearly remember him and how I was nervous while helping his family out and avoided eye contact. well 2 months ago the same guy got hired at my store. We worked every wednesday together ironically alone and the store being dead on wednesday nights we just talked... one thing lead to another, and we are practically seeing each other. With no official labels but we both know the feelings are 100% there. Why no labels? well I got accepted to Carleton and I'm moving to Ottawa in the end of august. (I'm from Victoria, BC) It just sucks, and I don't know what to do because at first it was nothing but a thing, but everyday with this guy is making me really have feelings for him... Should I just play it by day and enjoy it until then end? Or start to back off even though it's going to kill me now, but make it easier for the future?