When posted OUTCAN, the most inevitable thing is moving away, which is the worst thing when you have finally found a great friendship. When you start a good friendship abroad, you know it's inevitably going to either last forever or let it be short-lived. Whether these friends may be wherever, whenever you'll know it’ll be forever because, you’ve lived the same lives, traveled the same, been through the same cycle, which inevitably is move, make friends, find a great school, find great friends, then move. At least this is how it went for me.
When we get used to the cycle, we always forget the most basic things when having good friendships. My best advice is – This isn't goodbye, it's see you later. If this is meant to be you'll always find your way back to each other.