People leave. Some forever, some for a short while and some people leave only to come back again and again. Some leave with notice and some leave very abruptly. There isn’t much to do about this fact. The only thing to do is recognize a person in the present moments you are together. Say the things you want to say, even if they make waves. Ask people how they are doing when you see something just beneath the surface. Always let people know how much you care for them, even if you don’t know them that well. You never know how many more moments you’ll get with someone. Make them the richest, fullest moments you can.