A lover, of either sex; a wooer or a mistress (formerly in a good sense, now only in a bad one); one who takes the place, without possessing the rights, of a husband or wife; -- used of a man or a woman.
By or with love, esp. the love of the sexes; -- sometimes written as two words.
a woman's lover
an illicit sexual lover indeed, and the context of this passage supports this translation
( My Love Paramour): n. [Middle English/Old French - par amour, by way of love] A lover, especially on in an 0adulterous relationship.