Ok, this one took me by surprise. Apparently the boy next door and Ava had their first kiss in the backyard. They are both six. It was on the lips. Seems perfectly harmless. We had a conversation that kissing was for when she was MUCH older and it's ok to be friends and play, but that lip kissing wasn't something you do with a friend. Ava was confused about why this doesn't fly since I kiss her baby brother on the lips and sometimes kiss her on the lips too. Hmm, didn't really have a good answer for that one. I'm not easily stumped. Do I tell the mom of the boy next door? I should add that she confessed the kiss, I didn't see it.