"It was my idea to save him and my idea to take him on board and despite everything I'm still so very glad he's here. I don't know if there's any way to help me." The Doctor shrugged and, while he finished his ice cream cone, he laid back on the bed. After a moment he placed his hand on top of Jack, looking at the ceiling as he licked some crumbs off his lips.

"I left him behind. Way back when. He wasn't done with Gallifrey yet and I so very much was. I just wanted to see the universe. So I... I borrowed a TARDIS and took off with my granddaughter. Never really looked back." The Doctor shrugged, his eyes not just serious. Sad. "Now it's all gone. And only he's left. I couldn't leave him behind again."