Dangerous Earth!

I am an alien, and I have the most perfect mimicry of a human cub. My mission is to lurk on the Earth and bring all the information about the Earth back to the home planet. But I failed. They talked about love and stuff, and they knocked me down, and I lost the ability to return to my home planet. I'm cold and heartless. I have no heart. But they gave too much love. I love them too. (The story of the tough-talking little alien.) Concept: Love can resolve conflicts.