I thought this subject seemed pretty interesting...
I believe that people can go through certain periods in their lives where their opinions on "true love" changes. I believe it's all in the willingness for a person to want to open up to a person so completely.
Example, I was a pretty late bloomer as far as "love" and relationships, but when I did "fall in love," I was around 18. When you're young, I feel like your interpretation on what "love" is, is kind of... faulted. As I've grown older, my feelings on love are completely the opposite of how I once felt. I thought that it was what drove me to be a better person... But the truth of the matter is that, true love can only lie within myself. I'm not saying it's this way for everyone, but for me, I can't love another person the way I love myself. I guess you can call it narcissistic... I have a husband. Have been married for 3 years. And while I do love him, I personally feel like it's not the kind of love you would characterize as "true love" or "happily ever after love." Sure, I would protect him. I do love him. But my first dedication is to myself. And to me, that is what true love is. Because while I live with him, share with him... I don't rely on him. I take care of myself for the most part. Our marriage is that of mutual company. And we're okay that way. We actually only got married because of pressure from family. We both felt like it was a bit of waste. We were young and different at the time.
See, I believe that there are multiple people on this planet that you can become "compatible" with... There's so many people on this planet, there's no way there isn't. And I believe that people change. People lose interest in each other... People become attracted to other people. People change. So no relationship is ever, truly guaranteed. But at the end of the day, you can rely on yourself if you chose to. True love.
I just believe we're hormonal creatures by nature, and are often fooled by what is "love" and what is attraction.
Or maybe I just have a hard time opening up myself completely to someone. Who knows.