"Perhaps."

This is neutral conversational punctuation, considering pressing the point and topic but remaining quiet for the length of time it takes to consider Severus, and then his wine before sipping from it. "I had every intention to leave the country," he adds, almost flippantly. "Narcissa, naturally, insisted we remain. To see things through, is how she put it. There are few forces in the known world that can make that woman do anything she has decided she will not do."

And so, he remained in Britain, is what a tip of his wine glass is meant to indicate. He honestly doesn't know if Snape cares what became of him, after the war. Everyone seems inclined to go off inference and assumption, or just. Apathy. He isn't sure where his former(?) friend stands, but damn it all, he invited Lucius to drink and talk, and he shall do these things.

For some reason, admitting weakness (because to Lucius, anything that might show what he truly thinks and feels is that) in front of Snape the Younger is more difficult. The age disparity, perhaps. Their particular arrangement. "Including," he adds, "whatever force pulled me here."