Who Invented Kissing?

As I was watchin' Aladdin, and him and Jasmine first kissed, I began to wonder who invented kissing. When it comes to sex, I can understand that it was fairly easy to figure out... but kissing on the other hand would have been a lot harder to figure out. I dunno, but if you can find someone good to makeout with, then kissing is amazing!!

Just a random thought...