lil problem

i started dating this guy like 2 weeks ago, and i rly like him, every time we go out its amazing. I never felt this loved and cared for but there is a small problem.

He is moving to a dif country, 700km(450 miles) away to live and study there. Hes moving in september and hes never coming back so idk how to even start this convo with him, like we are together for 2 weeks and its early but we only have like month and half until he leaves.

Tbh i entered this relationship with intent to have some fun but in two weeks i realized am cooked bc am constantly thinking about him, so idk is he ft me for like some summer fling or what(i know i can ask him this but i still feel like this is honeymoon phase and i dont want to ruin it bc its so sweet and fun)