Teddy ran his hand idly up and down Sirius's back, offering him what comfort he could manage. "I'm sure it wasn't just you. Little pieces here and there until they build up into a landslide," things you never noticed until it was too late, he was sure.
He lifted his hands to Sirius's cheeks, making sure they were eye-to-eye, "You have all of my faith. All of it." Teddy kept to himself how he had grown up on what stories of the Marauders that Harry or his gran or the few others who knew them could tell him. It was half-hero worship, he knew, which was terrible but he wasn't about to put that on Sirius. "Why don't you stay here with me tonight and we'll go to breakfast together tomorrow. You can be yourself or Pads. Whichever makes you happier."