Is love a universal emotion?

If Love is a Universal emotion, then the pain it often causes (some might say inevitably causes) is equally Universal. Yet, that only begs the more important question: Why do sad poems and stories of emotional pain bring each of us a strange kind of pleasure?
I'm sure the psychologists have an answer to that question. And I'm just as sure it's a different answer than a poet would give.
Maybe, in the end, the answer really isn't so complex. A burden born by one can often grow too heavy to bear. Maybe, in the end, each of us knows that sharing our pain is the only way we can live with the pain. And that's really what each of these poignantly sad poems are about - sharing.