Eliot finally realizes what his most repressed and traumatic memory is. And it's not that long ago. He observes his memory of a conversation between him and Quentin. Right after they shared 50 years together solving the mosaic. Turns out, Quentin lovingly and vulnerably suggested they give it a shot -- maybe they should be together. And Eliot blows him off. He's scared and so he runs. Current Eliot sees what's happened, criticizes his former self, kisses Quentin, and heads to the door.