Together but have to say goodbye, a little sad !!

I just come back from our hot pan party and we almost stay up as yesterday was a holiday for families to gather together and enjoy our big deal. However, we can't, every time when we have traditional festivals my friends and i will stay together to enjoy a big meal. During the dinner,we talk  a lot of things  about our future, i know i either apply for my master's degree or go back to my country to find a job. But what i am afraid is that my friends will leave Finland within 3 months , i am so sad to image the scene when they leave. We are here now to study together and  have fun together but one day they will leave and then maybe half a year later or one year later i will leave.I just suddenly so sad to think about the say goodbye moment while we are having fun together.Am i sensitive? Do you understand my feeling?