It's beyond Dick why you suggested that he wears a salmon suit on patrol or why Jason just happened to have one laying around but he's sensing a pattern.

It's also beyond him why you aren't wearing one but he'll let it slide this time.

He stands in one of Gotham's many alleyways with you as you giggle to yourself. He turns to you with a confident smile. "Nothing fishy going on tonight."

He's only doing this because he likes to see you smile.