Agent Smith has decided that the best way to defeat the human rebels is to understand them. Today, he's concentrating on the human emotion called "love". The only way he can even begin to understand it is to understand the physical side.
So he has ordered the creation of a number of duplicates of himself. He has ordered them to do what is necessary, and he is merely watching.
By the end of the day, Agent Smith knows a great deal about the nature of human sex. He even understands a little about what they call "arousal".
But he is no closer to understanding love.