If he were really able to think straight, that pat on the back might have been a little soothing but the pain is consuming all everything that he is at the moment so it doesn't really register. He just continues to cling to the other, vents cycling heavily as he tries to keep his grip on the other..

But the longer it goes on, the weaker his grip gets since, you know, energy loss and everything.

Rung trembles a bit more as his hands slide down the other's arms some, the therapist just barely slouching a bit but he refuses to ask the other to stop. Dead End can take what he needs; recharging and refueling will get him his energy back eventually.