Since he started sleeping in his toddler bed, my son and I have had a routine. He'll get into bed, I'll sit on the floor next to him, read him a bedtime story, and kiss him goodnight. Then I'll stay sitting next to him until he falls asleep. That is, until now. Now that I have an infant to care for as well as my toddler, and now that he's getting to be so big, I can't sit there anymore. And a few nights ago, when I told my boy that I had to leave the room, it hit me like a ton of bricks. Last night was the last night I will have sat next to him. I had to hold back tears at that thought. It hadn't occurred to me that I won't sit and watch him toss and turn in that bed again. I won't listen to him ramble in his own toddler language. I won't look down at the floor as he softly touches my arm to get my attention. My little boy is growing up.