(Need to watch more that D: I only finished series 1)

The Doctor was looking at them, He was pleased for them. He knew Jack deserved to be happy, he was sure that Jack was worried about outliving Caitlyn but trying to not focus on it. He knew what that felt like. 
"Don't worry Rose," He said guessing what she was thinking.
Jack was smiling and looking at her "Mmm yeah."