Long distance relationships are hard - even when you DO know that you will see them at set times etc.
My suggestion (which seemed to work okay for me at the time) is lots of emails, photos, Skype and FB chat... keep in touch and let the other person know how you are feeling, that you are thinking of them and what has happened in your day...
Tip - unless you have something interesting to say keep the Skype chats to every other day - every day is just too much
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