The reason why I'm interested

The reason why I'm interested in Buddhism is because it's all about enlightenment.
I'm so confused about life right now, especially love.
I have always thought that when you love someone, really love someone, it's forever.
Somehow though, it's easy for other people to just stop loving. So, how are you supposed to devote your life and love to someone knowing that they can just stop loving you at any moment?
Why would you leave yourself open to that?
I thought I had steeled myself against that kind of pain but I fell for someone who convinced me that their love was real and forever. Why did I do that?
Why do people play with the emotions of others?
So, I'm looking at Buddhism for either the answers to those questions or the understanding that the answers don't matter and to figure out what REALLY matters.