It's awful, but I struggle going for a week without my boyfriend - and we talk every day. I can't really understand the pain of what you're going through, and I'm not going to pretend I can - but I will say what my friend, who isn't seeing her boyfriend for six weeks, said would help her most - keeping her busy, but not pretending that her boyfriend isn't there - you're going to miss him, so don't pretend you're not - just accept it. Do things, keep yourself busy, talk to your friends - even plan things out for when he comes back. But try to have fun, try to still enjoy it, even though he isn't there.
xx