Breathing isn't an instinct anymore, but something he has to tell himself to do, and which seems to require a lot more concentration than he's able to give it. Finding the bench nearby, Cade sits down and knots his hands in his hair, curling over to cover his face. Now that he's slowly coming back down, he's realizing that this is a public place, there are people around, and no fewer than three are currently witnessing this disaster.
"I'm sorry," he whimpers into his hands. On some level, he knows Zevran doesn't want to be here, and that he's being a nuisance again.