Ate dinner outdoors today, in the cold

I just found out one of the guys I am friendly here with (a Johannes, interestingly named enough) is going back to Germany the next academic year, for good because he is switching to Medicine from International Relations. He was in the same class as me for 1 EH101 lesson (before switching to PH) and for all of my GV100 lessons. Plus we live in the same hall. I can't say we were really close, but the idea of a friend leaving so soon (for good) just makes me feel a great sense of loss.