Rose got up from the seat she was at having looked at the data and wrapped her arms around him soaking in his nearness. She was determined that she wouldn't lose him. She couldn't have this inability to age if she was meant to lose the alien she loved who could regenerate. 

"Of course I will." Ianto promised easily as he sat by Jack. He saw that Jack was still cold so he made the decision to do as Rose had done for the Doctor when he had shivered and got next to the immortal on the bed wrapping his arms around Jack sharing his warmth