Yes.
I have spent many years on this planet, have met 100's of people and couples, have had my share of dates and relationships and I can tell you, it's there. It is rare. It is powerful. So when you find it, hold on to it. But, like any other thing in life, it still takes work...but it's there.
Why do I believe this? I've seen it. I've seen it on the faces of two people who have endured many hardships, many joys and many tears. It was watching them share the good times and the bad with such effortlessness. It was watching the "puppy love" between them continue throughout the years. It was watching as one passed away...and the other would never be the same again. He had lost his love. His soul. His passion. His friend. His companion. His true love.
With that said, I also believe there are quite of few "levels" of love and that there can be one or two for each level. Don't give up. Don't despair. Just keep moving forward. More often then not, it finds you. You don't find it.