This morning, as I was sitting on the couch feeding R, L scoots over next to me and lays his head on my shoulder.

L: I love you, Mommy.
Me: I love you too.
L: I miss you, Mommy.
Me: I miss you too, Buddy.

Enter the working mom guilt.

L has been having a hard time since I went back to work.  R has been having a hard time too, but I think her issue is more that she still refuses the bottle.  L got used to me being home and having energy to play with him in the evening.