seducer — to lead astray, as from duty, rectitude, or the like; corrupt.
casanova — Giovanni Jacopo (dʒoˈvanni ˈjaːkopo). 1725–98, Italian adventurer noted for his Mémoires, a vivid account of his sexual adventures and of contemporary society
lothario — (sometimes lowercase) a man who obsessively seduces and deceives women.
prince charming — (sometimes lowercase) a man who embodies a woman's romantic ideal.
romeo — the romantic lover of Juliet in Shakespeare's Romeo and Juliet.
tempter — a person or thing that tempts, especially to evil.
wolf — any of several large carnivorous mammals of the genus Canis, of the dog family Canidae, especially C. lupus, usually hunting in packs, formerly common throughout the Northern Hemisphere but now chiefly restricted to the more unpopulated parts of its range.