Really? Because I look at this and I'm thinking payback.
The funny bit is now they're almost the same bloody age, Lupin and Tonks. That's all of them, they're all that young. Lupin, Sirius, Harry's parents ... oh, and Pettigrew. Apparently we can't just up and kill him.
No, you can't be okay with that, because he's hot, and that's gross.