Neo-Geo Forums

I have an Mp3 of Smile.dk doing a song called "Petit Love", and I have an MP3 of Morning Musume/Puttimoni doing a song called "Chokotto Love". They are obviously the same song. My question is, which is the original and which is the cover? Or, are they both covers and it was originally done by a different group? Can someone clear this up for me?