There is more than one way to hit on someone and in some cases lines like that may work! But yeah, back to the point - don't stress about nice guys finishing last, as long as you're not a pushover or anything like that - then nice natured people usually don't finish last actually. I can not stress enough that people should be themselves more often, forget what other people are going to think of you, but know when it's appropriate/important to impress someone!
To love is to suffer. To avoid suffering, one must not love; but then one suffers from not loving. Therefore, to love is to suffer, not to love is to suffer, to suffer is to suffer. To be happy is to love; to be happy then is to suffer, but suffering makes one unhappy; therefore to be unhappy one must love or love to suffer or suffer from too much happiness. I hope you're getting this down.