"I saw enough. I saw--" Too much. He saw too much, even if he's trying to say otherwise, and that's why he's still not afraid of Loki, only the mad influence behind him. And now that that's long since gone, what's he scared of?

Loki wants to be seen, revels in it, and Clint doesn't want to be seen unless he gives it. Is that it? He's reminded that he is seen, and it leaves him feeling bare and defenseless. And Loki wants to dive in and be felt and heard and seen and understood.

When two souls touch one another, it's impossible to extricate themselves completely. Intermingled, intertwined, a bit of him in Loki, a bit of Loki in him, forever. Somehow knowing each other better than anyone else and not knowing anything at all. It's not a knowledge of facts and figures, but mind, emotion, an intrinsic understanding of the person inside.

When did he start hovering closer? He doesn't remember doing that consciously.

"Pretty sure you last heard it five years and change ago before you died." He'll fight it. With snark, anyway.