Long distance relationships are never easy. There's this thing of seeing other couples together, it doesn't even matter if they have the best relationship ever, but they are both THERE and they are TOGETHER and suddenly it's all that you want for yourself. To be able to see the other person and at least hold hands, anything at all. But there are miles that separate you and suddenly things don't seem real anymore. Are you in a relationship when you can't go out with that person? can you stop being interested in others and tell them "Sorry, I am with someone" when you hardly see that person? it's difficult and this song pretty much does a good job at explaining it.