"I can make no promises," Solas drawls, full of adroit irony, "But I have no plans that should aggrieve you, in the near future."

No, he hasn't given up on that; but he is being honest. If he truly wished to hide himself, it would be as simple as lying. Letting Lavellan believe him redeemed, letting her version of the truth stand for reality.

He puts his own hearthcake back on the tray, all but untouched, and turns towards the door. Solas pauses once, his hand on the latch, looking back, as if something had only just occurred to him— but he says nothing, and instead only smiles, and the door is quiet as it closes behind him.