There's a certain feeling that's hard to describe, the feeling you get when you're away from your soul mate. It's with you always, and you think about them at least once every five minutes, as a rule. It's like there is a stone in your chest, weighing you down, and you can't get enough air in. You're drowning.
An uneasy distance is what usually causes this, a distance of more than a few miles. You remember back to when they first told you they had to leave, how all the breath left you, and how you haven't had a decent one since. You feel your love for them physically, and a pain radiates to your knuckles. Your throat closes up when you're in your bedroom and they aren't. You look out a window and long for the stars to bring back your love. They don't.
It's the hardest thing to describe, and it's even harder still to feel. Life without him, life without her, is much grayer, much more drab. Normal. Life with them was so full, so colorful. When you met, it was like turning from black and white to color, from color to high definition. Everything was clearer, crisper, better. And now that that's gone, everything is back and white again.
You long for and hope for the day that your love returns. You look up at the moon, the clouds, the stars, and wonder if you're seeing the same sky. A sky with dim stars. They were much brighter when your other half was there.
All there is to do is wait, and hope you don't drown in the sorrow.