Why love is not an emotion

After attempting to express my own "definition," I came across this  in a book I am currently reading.

From the book "The Language of Emotions" by Karla McLaren

When an emotion is healthy, it arises only when it's needed, it shifts and changes in response to its environment, and it recedes willingly once it has addressed an issue. When love is healthy, it does none of these things. Love does not increase or decrease...and it does not change with the changing winds. Love is not an emotion; it doesn't behave the way emotions do. Real love is in a category of its own.

Those things we've learned to equate with love - the longing, the physical attraction, the shared hobbies, the desire, the yearning, the lust, the projections, the addictive cycles, the passions - those things move and change and fluctuate in the way emotions do, but they're not love. Love is utterly stable and utterly unaffected by any emotion. When we love truly, we can experience all our free-flowing, mood state, and raging-rapids emotions, while continuing to love and honour our loved ones. Love isn't the opposite of fear or anger or any other emotion. Love is much, much deeper than that.

For some people, love is merely adoration, which is a form of projection (creating an "ideal" image of who someone is)...it's what passes for love in many relationships: you find someone who can act out your unlived material (the parts of you that you don't necessarily honor) attach yourself to them, and enter into a haunted carnival ride of moods and desires. When the projections fall and you see your adoration target for who he or she truly is, you become disillusioned and try to reattach your projections, or even seek another person to project unto. But that's not love, because real love doesn't play games with other people's souls, and it doesn't depend upon what you can project unto your partner or what you can get out of the relationship. Real love is a prayer and a deathless promise: an unwavering dedication to the soul of your loved one and the soul of the world...real love never wavers. Real love endures all emotions, and it survives trauma, betrayal, divorce and even death.

Love doesn't restrict itself to romantic relationships. Love is everywhere. When you're lost and you can't seem to find love anywhere, you're listening to love in human language instead of listening to the language of love.