Nikarkhos, Greek Anthology 11.7
No one, Kharidêmos, can keep screwing his wife
And enjoy it deep in his soul.
Our nature is so fond of novelty, of foreign flesh,
That it is always seeking exotic pussy on the side.
Οὐδεὶς τὴν ἰδίην συνεχῶς, Χαρίδημε, γυναῖκα
βινεῖν ἐκ ψυχῆς τερπόμενος δύναται·
οὕτως ἡ φύσις ἐστὶ φιλόκνισος, ἀλλοτριόχρως,
καὶ ζητεῖ διόλου τὴν ξενοκυσθαπάτην.
κινεῖν: is printed in many manuscripts, but βινεῖν (“to screw”) is clearly preferable here.