I'm a follower of Christ, so "love" isn't a measure of how intense my emotions are about someone. I consider it a mindset.
I once had a (Christian) friend who claimed he would only ever say "I love you" to a very few people. Love was hierarchal and exclusive to him. He measured it by the people he'd be willing to give his life for - as the ultimate act of love in the Christian tradition is giving one's life (either in devotion or in death) to another. And while I agreed with that, I disagreed with his belief that love was to be limited to such a small circle of people who just happened to play significant roles in your own life. If the greatest act of love is giving your life for another, then how much greater is a love that could die for a stranger? As a Christian, I think we're called to love the most people as greatly as possible - That's how God loved in our tradition. The greatest love isn't giving your life for a mutually beneficial relationship, but even relationships you receive no benefit - even harm.
So I try to love many people, and I aim to say "I love you" as honestly as possible and as much as possible.
But when there's a person I find truly unique and special, and that I'm drawn to, I don't feel "love" is adequate there. I'd rather show, or express in other terms my emotions. Other people I feel I should love as they come and go in my life, but if there's someone I'm seeking a relationship with, I'm deciding to commit to being with them, to show love and maintain its mindset for an indefinite amount of time. That relationship won't have something greater than love, but definitely something more than just love.