[n] a man who is the lover of a girl or young woman; "if I'd known he was her boyfriend I wouldn't have asked"
boyfriend Poems and Poetry
beau, fellow, swain, young man
adult male, lover, man
admirer, amoroso, beau, beloved, caballero, Casanova, cavalier, cavaliere servente, crush, Don Juan, esquire, fancy man, fellow, fiance, flame, gallant, gentleman friend, gigolo, heartthrob, inamorato, lady-killer, Lothario, love-maker, lover, man, master