I know that the count was said to be "on terms" with Sorelli.

But it could hardly be reckoned as a crime for this nobleman, a bachelor, with plenty of leisure, especially since his sisters were settled, to come and spend an hour or two after dinner in the company of a dancer, who, though not so very, very witty, had the finest eyes that ever were seen! And, besides, there are places where a true Parisian, when he has the rank of the Comte de Chagny, is bound to show himself; and at that time the foyer of the ballet at the Opera was one of those places.
Lastly, Philippe would perhaps not have taken his brother behind the scenes of the Opera if Raoul had not been the first to ask him, repeatedly renewing his request with a gentle obstinacy which the count remembered at a later date.
On that evening, Philippe, after applauding the Daae, turned to Raoul and saw that he was quite pale.
"Don't you see," said Raoul, "that the woman's fainting ?" "You look like fainting yourself," said the count.

"What's the matter ?" But Raoul had recovered himself and was standing up.
"Let's go and see," he said, "she never sang like that before." The count gave his brother a curious smiling glance and seemed quite pleased.

They were soon at the door leading from the house to the stage.

Numbers of subscribers were slowly making their way through.
Raoul tore his gloves without knowing what he was doing and Philippe had much too kind a heart to laugh at him for his impatience.