The song is about love. Life should be fun for those in a relationship. The lyrics just be yourself don't ever change your style corresponds to the fact that you should not change who you are for someone else. Come on baby refers to the word baby in the context of those who are in love. Won't you open up the door and let me in refers to letting down your guard and letting the other person into your heart and into who you really are. Another part that signifies this is the I like you like me let's have fun lists be free. The I like you like me is used as in like, or not yet love but more than just good/best friends. Let's have fun is about how a relationship needs to be fun and enjoyable for both people most of the time. In every life a little rain will fall is about the low points that befall every long term relation at some time. Every now and then I'm insecure is about showing both the best and worst qualities to the other person in the relationship. In the terms of the Saddle Club TV show, this shows the song is about Steevie and Phil when they are dating.