All love is one-sided.

Speak to me of love returned and I'll say that unrequited love is as valid as love that has been given two sides.

See? Take away half of a passionate romance and you still have love.

Tell me about God and I'll say that the Big Guy Upstairs will love you whether you believe in (love) Him or not.

"One-sided" love or unrequited love might fade or turn into an obsession because of our humanity, but it's still love. Still a love before it fades, before it darkens into obsession, and before it is ever returned or deepens into a two-fold affair, because really, all love is one-sided.