Dick was finding it harder and harder to control his anger with each second that you continued to spend talking with your co-worker.

It's not that he didn't trust you, only his self-doubt was to blame in this situation

Still, it didn't stop him from acting all grouchy when you two got home. He didn't chat your ears off, didn't even made a single joke the whole evening. Dick just... closed himself off, brooding in his own miserable thoughts.