Plutarch Demetrius 14

[1] Furthermore, while he lingered in Athens at this time, Demetrius took to wife Eurydicé, a widow. She was a descendant of the ancient Miltiades, had married Ophelas the ruler of Cyrené, and after his death had come back to Athens.

[2] The Athenians, accordingly, took this marriage as a graceful compliment to their city; but in general Demetrius made a rather light matter of marriages, and had many wives at the same time, of whom Phila enjoyed the greatest esteem and honour, both because of her father, Antipater, and because she had been the wife of Craterus, the one of all the successors of Alexander who left behind him the most goodwill among the Macedonians. This woman, as it would appear, his father had persuaded Demetrius to marry when he was quite young, although she was not of his age, but older;

[3] and when his son was disinclined to the match, it is said that Antigonus whispered in his ear the verse of Euripides: substituting off-hand must one wed for the similar inflection must one serve. However, so slight was the respect which Demetrius paid to Phila and to the rest of his wives, that he consorted freely with many courtesans, as well as with many women of free birth, and as regards this indulgence he had the worst reputation of all the kings of his time.