So, obviously, I was reassured that he was doing fine while I was at work, which was helpful. And at the end of my work days I quite seriously walk/ran to my car in order to go pick him up - I was SO excited. And 3 out of the 4 days, when I walked in the door and he took a look at me, he gave the saddest pout and started to really cry. Crying that he rarely does unless he's startled or something has pained him. It is very likely that since on those days he didn't have an afternoon nap, he was just overtired and somehow seeing me triggered the tears. But I have to say, each of those times, once he was in the car and settled and we were on our way home, I bawled. My feelings were terribly hurt. And then, within 5 minutes of walking through our front door, he was my smiley, cuddly boy again, so I recovered - sort of. I was somewhat prepared for him to cry when I left him in the morning, which he never did, but was utterly unprepared for him to cry when I returned. Heartpain.