unrequited love

I have seen a lot of movies, and i think that is a false statement.. since unrequited love hurts.. especially if the person you love is totally ignoring you or treating you badly. and even loving someone else.. That just hurts..

I don't know where you have found this quote, but the worst time in my life was spending four years as somebody's best friend when I just knew that I wanted to be more. He never liked me in that way, but he was always happy to keep giving me false hope by being flirtatious with me. I don't know what he thought he was doing, but I hope he knows just how much he hurt me over the course of those years. I don't think that there is anything worse than loving somebody who won't ever love you back; as it just made me feel hopeless about everything.

I think I would interpret that sentence to mean that, during the time a person is in love, although unrequited, they feel so happy. They desire someone... they are thinking about them all the time, wanting them, constructing scenarios in their mind where they will someday be together. It's one-sided but they feel truly in love and are pursuing the object of their affection. So I suppose, at that point, they are still very happy. But, as you've said, it does reach the point of being heartbreaking because unrequited love is love that is not reciprocated. The two never become one.