According to Wikipedia, The Phantom of the Opera (in French, Le Fantôme de l'Opéra) is a French novel by Gaston Leroux. Initially, the novel sold very poorly and was even out of print several times during the twentieth century. Today, it is considered to be a classic of French literature. It has since been adapted many times into film and stage productions, including the notable Andrew Lloyd Weber 1986 musical starring Michael Crawford (ahem!) as the Phantom. (Side note: The Phantom of the Opera musical is now the longest running Broadway show in history and the most lucrative entertainment enterprise of all time, its worldwide box office over the past 20 years out-grossing even the highest grossing film in history, Titanic.) For more information on the story itself, see here.
Pros:
Dude can sing
Dude can sing
A one-woman man
Misunderstood romantic side that appeals to women
He's French
Cons:
He's French
VERY jealous lover
Has stalker/might kidnap you/kill your boyfriend/raving lunatic tendencies
Not so easy on the eyes
Lives in the sewer
History of extortion and violence
*Upon review, it seems that Erik AKA The Phantom may not be a man worth marrying after all. Turns out he's got some really serious cons stacked against him. But when I say "dude can sing," I mean dude can REALLY sing.