Lestat closes his eyes when Louis speaks of his nightmares and his teeth clench. It should have been expected, but it didn't make it easier to hear. After a moment, he opens his eyes. Lestat doesn't say so, but Louis is not alone in reliving trauma enacted upon him. The memories of his life before Louis are mostly contained, mostly wrestled into submission; dreams of Nicki, of Magnus, of Gabriella's leaving. All things he has reckoned with and while painful, they are old wounds and he has learned to control his environment enough to lessen the triggers.
The slitting of his throat is a more recent trauma, the feel of Louis' arms around him, the slow descent into what he believed was death, and the knowledge that it had been the man he loved, the ending of everything that mattered. It's not a contest and Louis is right. They have done horrible things to one another, but nothing they could not forgive. Louis has forgiven him. He is here, not with lingering hatred and the desire to harm, but with a yearning to be with him once more, to return to Lestat. Louis moves, and Lestat stills his pacing, frozen like a skittish cat. A thousand things come to mind, more apologies, more pleading.
He isn't looking at him, doesn't want him to see the shame there that is most certainly present on his face. Even as he reassures him, his stomach twists. There is an urgency to Louis' tone he doesn't understand, like he needs him to know, and he wants to say he does, that he understands and then Louis is saying the thing he's wanted to hear for thirty years. I love you. He'd known it, hadn't he? Some part of him. In the beginning, he'd been so sure of it, but over the years, when things got bad, when the silence took over, when they were separated. It was hard to hold onto, hard to believe and then he'd left him, truly left him, and Lestat had thought that maybe he'd never felt it at all.
His expression is surprised, and his brow furrows as he lets out a soft laugh, wiping at his face. Not mocking, but as if he cannot quite be sure he heard it correctly. As he takes his hands from his eyes, he says very quietly, "You love me?" After everything. Any dread he had, any anxiety, it's gone. He moves and meets Louis and does not take just take his hand, but pulls him the rest of the way into another embrace, burying his face into Louis' neck. The tears come, and he's crying now, with relief. He's wanted to hear it, to know it to be true, for so long. The simple affirmation. He pulls back and takes Louis dirty, tear stained face between his palms and without thinking much about it, he kisses him.