From my point of view, it's just a phrase. I hate to sound like a curmudgeon, but it's part of romance fantasy and literature. We need such inspiration to give us hope but the reality falls quite a bit short.
That being said, I'll clarify my point: you can have a couple who is completely dedicated to one another..and lives a good happy existence. However, 'true love" is a myth. It is nice to have a goal to aspire to and an ideal.
What are your thoughts?