Overthinking or with reason?

My husband and I were separated for about 5-7 months. Before separation, our IGs were mainly family based followers/ following included. During the separation, we unfollowed each other from social media but once we decided to work things out, I unfollowed all men I didn’t know but I had followed during our separation.

My husband and I just followed each other again and I see he is still following all these girls. Is it reasonable to be upset about the thought that these were the girls my husband was eying and possibly messaged? Mind you, we were separated and I’m not upset he added them then, by why still following them?