"Well... you can't change the past. Not without the Doctor getting on your back, or Reapers showing up," he joked.
Jack kissed the top of Martha's head and sighed as she snuggled close to him. He'd always cared about her. They had been through things together that most people could never comprehend. The two of them had spent a year in hell, which nearly no one else on Earth knew ever happened. They had saved the Earth twice, battled Daleks, faced down the Master, and always managed to help each other come through it alive.
But since she returned full time to Torchwood, Jack had found himself becoming even closer to the young Doctor. Closer than he thought possible.