"I guess," says Barry dubiously. As strong as the moon feels now, he can only imagine it without a wall between them. "What if I freak out?" he asks. "I don't feel like myself, I feel like - when I hit puberty times a thousand."

The thrum of Derek's heartbeat against his hand helps, and Barry tries to let it drown out the pounding in his blood. "What if I hurt you on accident?"