(A) It is no defense to a charge of theft of property that the offender has an interest therein, when the owner also has an interest to which the offender is not entitled.
(B) Where the property involved is that of the offender's spouse, no prosecution for theft may be maintained unless the parties were not living together as man and wife and were living in separate abodes at the time of the alleged theft.
(ILCS Ch. 720, Act 5, § 16-4)