Yesterday as I prepared to leave for work, LP gave me a kiss. Then she gave me another and told me, "Put it in your pocket and save it for later." She also requested a kiss from me to save for later.
AK has also started kissing. All I have to say is "Give mommy a kiss," and, if she is in the mood, she will oblige. They are open-mouthed, but without tongue and just WONDERFUL.
This is why the sleepless nights are worth it.