Theo smiled at Pansy, reaching out and touching the small of her back soothingly. "Yes, we are. Well I did not know Stephen was." He looked at his son. "As he obviously did not know about me. I'm not surprised that Severus kept my involvement a secret. It's best for all involved."
He took a sip of the beer and pondered the next question. "Your mother knows more than she thinks she does," he then answered, before turning to Pansy. "You found out more than was prudent and agreed to let me obliviate you of the memory. To further ensure the memory not being accessible we've kept it in a pensive. It is more than enough for most encounters, but not for a full interrogation by the Dark Lord himself."