Despite Glacius' vote of confidence, Carlisle doesn't find himself very self-assured at that moment, certainly not when he caved to old vices in his desperate attempt to ease the rising burden of his fears. Later, he chides himself. He can tear into himself later for being a pathetic coward. For now, Glacius is here, and needs his help. They need each other.

He rests his forehead on Glacius' chest once more, only for a moment. "Perhaps we were both fools today, seeking respite in unproductive retreats rather than one another. We should cherish what we have while we have it."

That's not exactly a reassuring thought either, but it's a truth Carlisle has reminded himself time and time again throughout the day. What would he say if he saw Glacius again? What would he wish he had done? What would he regret?

He'd regret not taking care of his partner, for one. He relinquishes his grasp around Glacius' middle and leads the alien inside.