don't give hint, don't complain privately

If you don't feel comfortable that he's taking your credit or ignoring your credit, whatever, just find a good time to talk to him about this. Speak out your feelings and thoughts, let him know what you really think. If you don't tell him, that means to him that you accept the way he acts . Men and women work/think differently, women tend to give hint and HOPE others will pay attention to their needs and thoughts, while men just speak out and act, they let others KNOW what they want/think.