There's a strange genuine quality to David's look, something not so much notably absent before as present now. He runs a hand along Charlie's jaw, down his cheek.

"You can't do that to yourself, love. You can't. If there is anything I've learned over the years, it is that 'what if' is the most dangerous and destructive question you can ask yourself."

He leans forward and presses a light kiss to Charlie's lips, nose nudging his face up just enough for David to look at his eyes.

"Please don't?"