"he who steals in order to commit adultery is, speaking formally, more an adulterer than a thief."

"ille qui furatur ut committat adulterium, est, per se loquendo, magis adulter quam fur."

     Thomas Aquinas, Summa theologiae I-II.18.6.Resp., referencing Aristotle, Nichomachean ethics V.ii.4 (1130a):  "suppose two men to commit adultery, one for profit, and gaining by the act, the other from desire, and having to pay" (trans. Rackham, LCL (1934)).  Objectum:  the commission of theft; finis:  the commission of adultery.