Not Goodbye

So with four sleeps to go til I head back home to Canada, I find myself in a bit of a problem. I have come to the sudden realisation that not only can my new friends NOT fit into my suitcase, but also that most of them will not be returning for next semester, as they were on exchange.
This has made me very sad. I have met some truly amazing people here. I have grown quite attached to them, and now I don't know what to do without them! I never imagined that leaving Australia would be difficult, after all, I had family and friends to return to post adventure. These people we not part of my plan!
What do you do when you realise that you were so excited to go home, but that means leaving?