"They say true friends can go long periods of time without speaking and never question the friendship. These types of friends pick up like they just spoke yesterday, regardless of how long it has been or how far away they live, and they don't hold grudges. They understand that life is busy, but you will always love them."
This is true for quite a few of my friends, especially one long time college friend. We go with the ebbs and flows of life. We may talk often in one week and not for weeks on end. We each have our own lives but when the mood strikes, we pick up where we left off.
Alas, one friendship I lost didn't follow this formula. I'm not sure if I had practiced this quote, if things would have been different. Regardless, it was a difficult lesson learned.