Something else to keep in mind is that a paladin may not necessarily care. He may not trust you, and will be watching you a little closer, but if you're not doing something both evil and opposed to his goals (a paladin of Set, for example, would probably not be too concerned with a petty drug dealer), he's probably not going to concern himself with you.
Or he might even see you as a necessary evil. Think of Star Trek: Deep Space 9. Quark was a known criminal and troublemaker, and the station's captain confronted him on the first episode, saying he was turning a blind eye to some of the more ... questionable activities, as long as the egregious ones were curtailed.
Or he might even see you as a necessary evil. Think of Star Trek: Deep Space 9. Quark was a known criminal and troublemaker, and the station's captain confronted him on the first episode, saying he was turning a blind eye to some of the more ... questionable activities, as long as the egregious ones were curtailed.
back up the GM informing the paladin character that evil is present in the detection cone in the first round of concentration, with no auras being able to be singled out in the second or third round.