My H also talked to OW for hours in the beginning. Still insists she is just a friend but whatever... I don't care about that anymore. My H too has been showing interest in my health lately. Started with blood tests ordered by Dr. Two weeks later he is now noticing how I feel, look, act, and is concerned about me just a tiny bit. Says he is just making sure I'm alive but I know it is more than that.
He will be thinking. Believe it or not, I believe they are doing a lot of this trying to figure out where their feelings are really coming from.
If you focus on the past, you ruin the future. You can only live for today.