Definition of "Lothario"

High times, indeed, if unprincipled young rakes like him are to be permitted to invade the sanctity of domestic bliss; though do what the Bashaw will, he cannot keep the most notorious Lothario out of his bed; for alas! all fish bed in common.

1851 November 14, Herman Melville, “Schools and Schoolmasters”, in Moby-Dick; or, The Whale, 1st American edition, New York, N.Y.: Harper & Brothers; London: Richard Bentley, page 437

He warned her 'gainst seductive youths in scarlet clad and gold, / As much as 'gainst the blandishments paternal of the old; / But kept his gravest warnings for (hereby my ditty hangs) / That snowy-haired Lothario Lieutenant-General Bangs.

1919, Rudyard Kipling, “A Code of Morals”, in Departmental Ditties and Ballads and Barrack-Room Ballads

So much of the plot structure rested on Chandler being the second string: the maladroit loser to Joey’s lothario, the joker skating beneath Ross’s romantic gravity.

2023 October 29, Zoe Williams, “‘The ironic, metrosexual lothario’: how Matthew Perry captured the spirit of the age”, in The Guardian‎