DM Hint of the day:
You guys need to embrace each others personalities. You have a lawful good in the same party as a mage filled with a dark aura. You have a paladin in the same party as a thief.
Use each others personalities to benefit the group, do not limit them. If you have to, just look away and go to a different place while the other is stealing or doing something dark.
Masterockets, are you just a thief or more of a rogue/assassin kind of a character?