Lyric discussion by zombiepear 

Cover art for The Space Between lyrics by Dave Matthews Band

Each line is stands on it's own, but the sum of them describe people in relationships.

Favorite line: The space between the tears we cry is the laughter that keeps us coming back for more.

I think it's pretty clear that the meaning there is: it's the good times (laughter) that outnumber the bad (tears) that keep people together.