As far as the pictures he sent of your S--always give your H the benefit of the doubt that he did it for the most positive reason you can think of.
You'll never really know why and trying to figure it out is a waste of time (and is a form of control) and he may not really know why--I wouldn't ask him why (which is a word that instantly puts people on the defensive--NEVER ask why questions)
Lead his thinking into the positive--thank him for sending the photos. It was very sweet of him and you appreciated it.
Even if he FLAT SAYS I didn't do it for you or whatever nonsense he may say, YOU put it in there he did it for a positive reason, and subconsciously he will be thinking he must have positive feelings for you.
I did a lot of this type of stuff 6 years ago--led my H into thinking I only thought the best of him, and it's such a neat dynamic that the more I did it, the more he thought he had similar positive feelings back.
