There's a thing called marriage, and that makes me honest.’’ Thus, both marriages turn out happily.

Sex
Besides references to marriage, the play is saturated with sex, most notably extramarital affairs. Many of the male characters in the play have engaged in extramarital affairs and so have some of the women. In the seventeenth century when a man slept with another man's wife, he was said to have cuckolded the woman's husband. Cuckoldry, which was depicted by multiple horns on the cuckolded husband's head, was often used to provide humor in plays like this. In the play, two men, Mr. Allwit and Sir Kix, are cuckolded. Mr. Allwit is aware of his cuckolding and allows it to happen, since Sir Walter pays for all of the Allwits's expenses in return for the privilege of sleeping with Mrs. Allwit. Allwit says about Sir Walter,"He gets me all my children, and pays the nurse, / Monthly, or weekly, puts me to nothing.'' In fact, the affair between Sir Walter and Mrs. Allwit is so strong that Sir Walter is jealous of Allwit. Allwit says, ‘‘I may sit still and play; he's jealous for me—/ Watches her steps, sets spies—I live at ease.’’

Sir Kix, on the other hand, is unaware of his cuckolding although he unknowingly alludes to it at times. For example, in one passage Touchwood Senior, a very fertile man who plans on impregnating the barren Lady Kix—and attributing her pregnancy to the fake fertility drink that he sells to her husband—asks Sir Oliver if he remembers their deal. Sir Oliver says, ‘‘Or else I had a bad head.’’ This comment, which can refer to Kix's memory, could also be taken by others to refer to the horns that Sir Oliver is about to gain through his cuckolding. Money
Besides marriage and sex, the characters in the play obsess about money. By marrying Moll, Sir Walter will get two thousand pounds in a dowry. Although it appears that he has enough money, the audience finds out at the end that he has been having a hard time paying his bills. As Yellowhammer notes, Sir Walter ‘‘lies i'th' knight's ward now.’’ The knights ward was a special section in debtor's prison that was devoted to knights. Yellowhammer further notes, ‘‘His creditors are so greedy.’’ So, while in the beginning it appears that Sir Walter is marrying Moll because he is interested only in marrying a virgin, at the end the audience can see that he also needed the dowry money to settle his debts. Many of these debts were probably gained from trying to support the Allwits. Through his long relationship with Mrs. Allwit, Sir Walter pays for the children they have, as well as all of the Allwits' living expenses. This certainly helps to drain his funds. As for the Allwits, in the end they use the property and possessions that they have gotten from Sir Walter to better their position in life. Allwit says, ‘‘We are richly furnished wife, with household stuff.’’ Mrs. Allwit suggests that they ‘‘let out lodgings then, / And take a house in the Strand.'' In other words, they are going to rent out their house in Cheapside and use the money to buy a house in the Strand, the fashionable part of London.

Touchwood Senior and his wife also worry about money, since his extreme fertility keeps creating children they cannot afford to raise. However, after he dupes Sir Kix into believing that it was his fertility water—and not Touchwood Senior's affair with his wife—that got Lady Kix pregnant, Sir Kix offers to take care of whatever children Touchwood Senior has. Kix says, ‘‘Be not afraid to go to your business roundly, / Get children, and I'll keep them.’’ After this point, Touchwood Senior and his family no longer have to worry about money.