Woman Discovers Suspicious Texts Between Husband and His Female Coworker, Making Her Question Their Relationship and Leading to Distrust

Hello, internet gossipers. We've all read these types of stories before: a woman starts noticing a strange pattern of behavior in her partner. He begins being more secretive with his phone, making sure to turn it off and lock it when he's not holding it, turning the screen away quickly when she gets too close, and changing his password all of a sudden. Next, she usually waits for him to let down his guard and leave his phone unattended - usually while he is in the shower or asleep. Then, she discovers all sorts of steamy texts and explicit images that he's been sharing with an ex, a neighbor, or a coworker. 
In our story today, a woman seemingly follows this very script until she reads that her husband is brushing off a flirting coworker with his responses. But something about the situation still bothers her. Why hasn't he told her about this coworker who is crossing a red line? Why hasn't he contacted HR? And why didn't he defend her when she called her chubby? Read the story below for the answers to these pressing questions.