That's great!!
I know that is another load off your mind.
Maybe it was because he was rushing, but he did kiss you and wouldn't have if he hadn't wanted to.

About the pessimistic side of your brain, my optimistic side of my brain used to be more developed than my pessimistic side, but now the pessimistic side is struggling to become more dominant, and I fight that side off for the most part, but not always.
Possibly it isbecause you had such a lovely day, and then you have to give him (his presence) up for the rest of the day, not knowing every moment what he is doing, so you worry about it and get to thinking too much. I do it too. It's hard not to, but I try to push it aside and think of something else to keep my mind busy.

Breathe deeply and remember you will have him again when he gets home, and you will have another lovely day tomorrow.

L