Butch, from Fallout 3. He's a very minor villain, and becomes largely neutral after the start of the game. But he's good looking and has the whole 'act like a tough guy so people don't notice I'm a wimp' mentality. I strongly suspect he remains a virgin throughout the game too.
I'd definitely like to drag him back to my lair and, uh... fix that for him; to hell with a 'love letter'. :3