Don't you suppose I know that you've lain in my arms and pretended I was Ashley Wilkes? Pleasant thing, that. Rather ghostly, in fact. Like having three in a bed where there ought to be just two." Oh, yes, you've been faithful to me because Ashley wouldn't have you. But, hell, I wouldn't have grudged him your body. I know how little bodies mean — especially women's bodies. But I do grudge him your heart and your dear, hard, unscrupulous, stubborn mind. He doesn't want your mind, the fool, and I don't want your body. I can buy women cheap. But I do want your mind and your heart, and I'll never have them, any more than you'll ever have Ashley's mind. And that's why I'm sorry for you.
I make no apologies for how I chose to repair what you broke.
Then I started screwing around, which is fooling around without dinner.
Love is not love,
Which alters when it alteration finds,
Or bends with the remover to remove.
— Hey, Charlie, there is somethin' in the Bible I do believe.
— What's that, sir.
— "Thou shall not covet thy neighbor's wife."
— I believe in that, too. But what happens when thy neighbor's wife covets you?
Those who are faithful know only the trivial side of love; it is the faithless who know love’s tragedies.
Of course, the comic figure in all this is the long-suffering Mr. Wilkes. Mr. Wilkes, who can't be mentally faithful to his wife and won't be unfaithful to her tecnically.