It's not that the Queen doesn't want to tell Miguel, but she doesn't want Miguel to know who her husband is because that would put Miguel in danger.
Miguel closed his eyes and had tears in his eyes. Why didn't he guess from the start that the person was a Devil?
The Queen not only protected him but also saved him.
Miguel was so blinded by jealousy that he never accepted the Queen with anyone else. It's ironic, but that's the truth. Since the beginning, Miguel has never felt love. He only lives with the ambition of creating crazy things and his day is full of ridicule from others. No one has ever been gentle with him or smiled at him.
Until the Queen came and carried that feeling in his heart.
Miguel loves her too much to the most critical point. He doesn't want the Queen to be seen by anyone but himself. He knows that his wish is impossible, but his obsession is getting more and more unstoppable.