Euripidis Tragoediae (Nauck 3rd ed.)

...the license of the comic poets, so that they not only maliciously disparaged the poems of Euripides, but brought the poet himself onto the stage and searched into his domestic secrets. And perhaps the domestic affairs of Euripides were so arranged that they provided material for caviling and mockery: although the things we read reported [about them] are mixed with myths and fabrications, and do not allow for a certain judgment concerning the truth of the matters. It is handed down, however, that Euripides had two wives; if you listen to the biographer, he first married Melito, then Choerine: Suidas inverts the order, [and] Gellius narrates that the poet had two wives at once: we do not have other witnesses of a double marriage 22. The things that are handed down concerning the perfidy and lasciviousness of either the women or Euripides partly carry the mark of a lie on their forehead, partly...

...[they] mix Cephisophon. Where the Scholiast says: "Cephisophon was thought to be a slave helping him in poetry, and especially the lyrics, whom they also ridicule as having been with his wife." That Cephisophon had an affair with the wife of Euripides is not probable, even from the silence of Aristophanes. [These stories are] invented [like] those that exist in the Life vs. 90: "He had a house-born youth named Cephisophon; he caught his own wife acting wildly with him. At first, he tried to persuade her not to do wrong; when he could not persuade her, he left the wife to him."
22) Life of Euripides vs. 26: "He married a first wife, Melito, and a second, Choerine." Suidas: "He was considered a woman-hater. Yet he married first Choerine, daughter of Mnesilochus, from whom he had Mnesilochus, Mnesarchides, and Euripides; having put her away, he had a second, and having experienced her [to be] similarly wanton." Gellius 15, 20, 6: "He is said to have hated women beyond measure, either because he saw the nature of women... or because he had two wives at once, when it had been made by decree of the Athenians [that] this was lawful, [but] he was disgusted by that marriage." Fritschius correctly judged concerning that little story of Gellius in his [commentary on] Aristophanes’ Thesmophoriazusae p. 111: "The whole matter," he says, "is refuted by the silence of the comic poet alone, who certainly would have mocked a woman-hater [for having] two wives at once." I have seen that the things said in the Life are false: therefore [the author] added himself to Suidas and suspected that the second marriage was very brief. To which judgment I would subscribe, if that bigamy did not seem fictitious. Certainly, Aristophanes knows no wife of Euripides other than the daughter of Mnesilochus: which matter I think sufficient to refute those mediocre witnesses. That this daughter of Mnesilochus was called Choerine, not Choerile, the books teach (cf. Life vs. 27, Suidas v. Euripides, Scholia on Aristophanes’ Thesmophoriazusae n. init.): Choerine is written in verse 67 of the Life, where we are lacking better manuscripts.