Defenses; Conditions Upon Same

(a)It is an affirmative defense to prosecution for theft that the defendant:

(1)was unaware that the property or service was that of another; or

(2)acted in good faith under a claim of right to the property or service involved or that he had a claim of right to acquire or dispose of it as he did.

(b)It is no defense that theft was from the defendant's spouse, except that misappropriation of household and personal effects, or other property normally accessible to both spouses, is theft only if it occurs after the parties have ceased living together.