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The phone rang at 2:47am and Hotch was awake before the second ring had even finished, some part of him already braced the way it always was whenever a call came through at that hour.
"Hotchner."
For a second there was nothing on the other end but breathing, fast and uneven, and Hotch sat up fully, swinging his legs off the bed. "Reid?"
"I'm sorry, I know it's late, I shouldn't have called…" Reid's voice cracked apart mid-sentence, thin and unsteady in a way Hotch had only heard a handful of times in all the years he'd known him.
"Spencer. What's wrong."
"I had a… it was bad, it was really bad, and I woke up and I couldn't…" His voice trailed off as he took a far too shaky breath. "I couldn't remember where I was for a second. I still feel like I'm not all the way back."
Hotch was already up, already reaching for his jogging bottoms in the dark, phone braced against his shoulder. "Are you safe? Is anyone there?"
"I'm alone. I'm safe, I just…" His voice dropped, small and raw. "Can you come? I know it's not… I know I shouldn't ask, it's the middle of the night, but I don't want to be by myself right now and I didn't know who else to…."
"I'm already getting dressed," Hotch said, and meant it as reassurance, not interruption. "Stay on the phone with me. I'm leaving now."
He kept his voice level the whole drive, the phone on speaker on the passenger seat, asking Reid small, grounding questions, what he could see in the room, what colour the walls were, whether the lamp was on, not because the answers mattered, but because the act of answering gave Reid something to hold on to besides the panic. By the time Hotch pulled up outside the apartment building, Reid's breathing had slowed some through the phone, though it hadn't steadied all the way.
He didn't bother knocking twice. Reid opened the door before he could, and the sight of him stopped Hotch for half a second, hair dishevelled, eyes red-rimmed and glassy, arms wrapped around himself like he was trying to hold his own ribs together.
"Hey." Hotch stepped inside and pulled the door shut behind him and then he simply opened his arms with no hesitation. "Come here Spence."
Reid went to him immediately, collapsing into the embrace like something in him had been waiting all night for permission to stop holding itself up. Hotch wrapped both arms around him, one hand coming to rest against the back of his head, and just held on, steady and unmoving, while Reid's breath hitched and shuddered against his shoulder.
"Shh, there, I'm here," Hotch murmured. "You did the right thing calling me. I mean that."
"I didn't want to be a burden," Reid mumbled into his shoulder. "It's the middle of the night, you have work in a few hours, I just…" his voice trembled and broke off.
"You are never a burden to me. Not at 2 a.m., not ever." Hotch pulled back just enough to look at him, hands settling on his shoulders, steady and grounding. "You called because you needed someone. That's not a failure, Spencer. That's you taking care of yourself the right way for once."
Reid's eyes welled again, and he ducked his head, embarrassed by how close to the surface everything still was. Hotch guided him gently towards the couch with one hand clasped around his own, sat him down, and settled in beside him without letting go of his hand.
"It's okay," Reid whispered, more to himself than to Hotch, like he was trying to talk himself back into steadiness. "It's okay, it's over, it wasn't real."
"It's okay," Hotch agreed quietly, rubbing a slow, warm circle against his back. "You're safe. I've got you."
Reid curled into his side, head resting on Hotch’s chest just above his heart, he was still trembling faintly and when he spoke again his voice had gone soft and unguarded in the way it only did in the deepest hours of pure exhaustion.
"Thank you for coming, daddy," he mumbled, barely audible, already half slipping toward sleep against Hotch's shoulder and then went completely rigid for a full second, the words catching up to him a beat too late. He scrambled back pushing himself away from Hotch as though he expected to be reprimanded by the older man. "I… oh god I’m sorry, I don't… I'm so tired, I didn't mean to…" Apologies tumbling from his lips before Hotch cut him off.
"Hey." Hotch's voice stayed exactly as calm and unbothered as it had been a moment before, no flicker of judgment in it. He reached over and drew Reid back close, tightening his arm around Reid, keeping him close. "It's alright. I'm not going anywhere, and I'm not going to make you feel small for what came out of your mouth at three in the morning after a night like this."
Reid pressed his face into Hotch's shoulder, mortified and exhausted in equal measure. "I don't know why I keep doing that."
"Because some part of your brain is exhausted from holding everything together on it’s own," Hotch said gently, "and when that part finally gets to rest, it reaches for the safest word it knows. That's all that is. It doesn't need an explanation, and it doesn't change anything between us."
Slowly, the tension eased out of Reid's frame, replaced by the heavy, boneless kind of relief that came after fear finally let go of a body. Hotch kept one arm around him and reached for the throw blanket folded over the back of the couch with the other, settling it over them both with ease.
"Try to sleep," Hotch said. "I'm not leaving. I promise that I'll be right here when you wake up."
Reid's breathing slowed, deepened, evened out slowly by degrees until it was steady and even against Hotch's chest. Hotch stayed exactly where he was, wide awake in the dark of Reid's living room, arm curled protectively around him, lost in his own thoughts about how some people simply hadn't had enough of this kind of care in their lives to trust it easily and that the least he could do, the very least, was make sure Reid never had to doubt it again.