This may seem like a StepMom Knows Best review, but I wanted to go into more detail about what it means when your baby girl is kissing someone else or even sucking on her own nipples! First of all if you are looking for a playful reason to teach your baby girl about love and relationships, look no further than when she is kissing her mom. You might be surprised how much of a role kissing plays in your baby's development and how fast you can pick up on your child's cues..