2. Orlando Bloom as Paris, Troy (2004)
When negotiating peace with a king, it goes without saying that you don't spark up a romance with his wife and run away with her. Well, it should go without saying, but that doesn't prevent effete Trojan prince Paris from stealing Helen from Spartan king Menelaus, who subsequently launches a thousand Greek ships to conquer Troy.
The end result: Soldiers kill Paris' older, more honorable brother Hector, his father Priam, countless Trojan soldiers, and destroy their city. Paris of Troy, the ultimate sucker for love.