The only thing Mac could do was hold tighter, and that's what he did - trying to keep a grip on Dylan that was secure but also wouldn't hurt him. He could handle the being cussed at and thrashed against - that was no worse than some of Evan's more memorable bad trips. "Shh," he whispered, "it's okay. Just breathe, relax. I know it hurts, but it's gonna stop hurting soon, okay? And then it'll be over and then everything will be alright and I'll be here until it's over," he promised. He pulled the younger man's thin body back against his chest, keeping one arm wrapped around his middle as the other hand came up and tilted Dylan's head back, brushing hair off his forehead. "I know it hurt," he murmured again. "Promise you'll be strong, though? All this pain means nothing and it's all one big waste if you don't get through it."