We were emphasizing on letting the kids fall asleep by themselves even though we only have a small two-bedroom apartment. It is fine for Peter, since, I guess, he has no way to complain. But for Yaya, she sometimes tried to argue about it, like tonight. She could not understand why she and her brother can't sleep with parents around, why they will get their own room one day we get a bigger house, but adults, like mommy and daddy, they will sleep in the same bedroom. So i began to explain again, like"husband and wife should sleep in the same room", still she looked confused. Then in order to comfort her a bit, i said,"you know, when you grow up, and you will meet a lot of boys, and you can pick one that you really like and marry him, then you two become husband and wife and you can share a bedroom..." Before i continued, yaya suddenly replied"M*!" That's her pick for her life partner, she already decided.