What men call gallantry, and gods adultery, is much more common where the climate's sultry.
~ Lord Byron

According to my sister, the expert novelist Jackie Collins, most men stray. And sex doesn't mean anything to most men. But I wouldn't date a man who slept around. Absolutely not. I've divorced people for that.
~ Joan Collins

Life is a game in which the rules are constantly changing; nothing spoils a game more than those who take it seriously. Adultery? Phooey! You should never subjugate yourself to another nor seek the subjugation of someone else to yourself. If you follow that Crispian principle you will be able to say ''Phooey,'' too, instead of reaching for your gun when you fancy yourself betrayed.
~ Quentin Crisp

My attitude toward men who mess around is simple: If you find 'em, kill 'em.
~ Loretta Lynn

You know that the Tasmanians, who never committed adultery, are now extinct.
~ W. Somerset Maugham

Adultery is the application of democracy to love.
~ H. L. Mencken

Husbands are chiefly good lovers when they are betraying their wives.
~ Marilyn Monroe

I do not think that there are any men who are faithful to their wives.
~ Jacqueline Kennedy Onassis

One man's folly is often another man's wife.
~ Helen Rowland

O curse of marriage that we can call these delicate creatures ours and not their appetites!
~ William Shakespeare

Adultery itself in its principle is many times nothing but a curious inquisition after, and envy of another man's enclosed pleasures: and there have been many who refused fairer objects that they might ravish an enclosed woman from her retirement and single possessor.
~ Jeremy Taylor

It is not difficult to deceive the first time, for the deceived possesses no antibodies; unvaccinated by suspicion, she overlooks lateness, accepts absurd excuses, permits the flimsiest patching to repair great rents in the quotidian.
~ John Updike

I never had but one intrigue yet: but I confess I long to have another. Pray heaven it end as the first did tho , that we may both grow weary at a time; for 'Tis a melancholy thing for lovers to outlive one another.
~ Sir John Vanbrugh

A mistress should be like a little country retreat near the town, not to dwell in constantly, but only for a night and away.
~ William Wycherley