Far away they are wonderful. The sun warms you, you enjoy its light. It cheers you up.
But if the sun gets too close to you or if you can't get a break from it so that it scorches you, the same sun that you appreciated will destroy you. You just cannot get too close to it.
When my ex was far away, we had great letters and deep phone conversations. When we saw each other for a weekend, it was powerful. But when we decided to make a cross country move and move in together, it was like I got too close to the sun.
I had no shade. No relief from her moods. I burned in the flames. But far away, when they are emotionally far away from you, how intense they can be. How they shine upon people.