smoothie — a person who has a winningly polished manner: He's such a smoothie he could charm the stripes off a tiger.
ladies' man — a man who strives especially to please women and to attract their attention and admiration.
romeo — the romantic lover of Juliet in Shakespeare's Romeo and Juliet.
lothario — (sometimes lowercase) a man who obsessively seduces and deceives women.
casanova — Giovanni Jacopo (dʒoˈvanni ˈjaːkopo). 1725–98, Italian adventurer noted for his Mémoires, a vivid account of his sexual adventures and of contemporary society
flirt — to court triflingly or act amorously without serious intentions; play at love; coquet.
coquette — A coquette is a woman who behaves in a coquettish way.
siren — Classical Mythology. one of several sea nymphs, part woman and part bird, who lure mariners to destruction by their seductive singing.
wizard — a person who practices magic; magician or sorcerer.
conjurer — A conjurer is a person who entertains people by doing magic tricks.
magician — an entertainer who is skilled in producing illusion by sleight of hand, deceptive devices, etc.; conjurer.
sorcerer — a person who practices sorcery; black magician; wizard.
witch — a person, now especially a woman, who professes or is supposed to practice magic or sorcery; a sorceress. Compare warlock.
