Let it go, when had he ever let anything go. For a moment the touch felt like old times, and everything that had happened didn't seem to matter but the moment she said to let it go the more he couldn't. It didn't change anything. The exposure to the gamma radiation killed her, and she would have never have been in harms way if it weren't for Bruce. She may have been able to forgive but he couldn't forget.
In times like these, normal people were aloud to let their emotions run a little wild.
"I can't." Was all he said before standing up and removing his coat to hand to Betty.