<human>: This account was created (obviously) to hear your thoughts. Hopefully you more experienced relationship redditors will have advice/suggestions for us.

My girlfriend (let's call her L) and I have been dating for over 5 years. I love her very much and I have no doubt that she feels the same for me. How do we know if this is enough? When we discuss our relationship and our future together we both agree that we have yet to feel the "i would die without you", "you're the only one I live for", "my life would be ruined if you left", stereotypical story-book love that people describe. It doesn't frustrate me as much as it makes me curious.

Is it silly to use this as a baseline for our own relationship? Does this feeling really exist? If so, will it come with time, or are we settling for a merely great relationship, but one that is not necessarily the best?

Right now, I know that I want to be with L, and so that is the feeling that I am acting on, and will continue to act on. But as we look to the future, I'd like to see if any of you have ever had similar conditions in your own relationships, and if so, what you learned from them.

Summarize the given text in a few sentences.
<bot>: Does the "i-would-die-without-you" love exist, and does it mean anything if we haven't felt it?