I think this statement was one for the history books for sure. I think it captured the feeling of love. What it means to love is that love controls him, and without someone to love, he can't quite be the same. I don't think he means without love his GPA will drop 3 points, but I think it means the one your love changes your ways.
“Ought” can indicate that something is probable. I must use the right tools to fix it. I should go and find some useful stuffs. Can you please help me bring these things inside.