Yeah, I'm sure if u were getting blown by a "girl" and she stood up and pulled out a **** you'd just calmly walk out of there and call the police and never think about it again. Isn't what that guy did rape? There was no true informed consent. It's the equivalent of your friend sneaking into a pitch black bedroom and ******** ur girlfriend while pretending to be u. I guess u'd chuckle that one away too.
I'm not saying he had the right to kill the guy, but to say it's not a provocation that can be taken into account for punishment purposes is ridiculous. When a woman kills her rapist or a father murders the molester of his child, we do. ****, we cheer him on.