Marco had accepted the invitation to their house confidently, and he had not even considered refusing. Christy was his friend as Godric owned his heart. He hadn't actually told Godric this, but it was a truth. So when he had been invited to "talk" to Christy he had agreed. He strode behind Godric into the room and watched mutely as he 'roused' her not too gently. Her reaction was expected and so he could watch it with little reaction. He kept his eyes on her for this moment waiting for her to yell at him for being there too. It's what he'd do if the tables were turned.
You look horrible, love. he responded to allow her fuel to rage against him. Anger was a strong emotion and he had been asked to help her out of this state she'd thrown herself into. Did Godric already know the session they'd passed in the Ravenclaw towers? He wished he'd brought NaLa, but if needed he could be called ina moment. Instead he stood here a friend ready to be of whatever service was required.