Balthier, despite being a relatively cold-hearted criminal guilty of treason, patricide, and a slew of other joys, probably would care about Martel's past transgressions - the price of having (against all his best efforts) a conscience. But he doesn't care to know, and as such, their friendship carries on pleasantly with a warm, apathetic center, and all's the better.

He sighs, "At least the wards will be impressive." Between the two of them, intruders will be lucky they aren't lethal. Balthier arrests his booze back to refill is glass - yes yes he is a very generous thief, you love him for it.