Wife instincts

is It just me or all the mother's and wives out ther have a very good instincts, be it the situations about kids or our husband? I do feel like my husband still do have feelings for his Scandal! cause when I ask him about her he denied but his eyes and actions says differently. I could feel like his not genuine with me and that I am just a rebound. Maybe I am to insecure since I am way younger than him.