But Severus is more in anger than in pain. He heard Dumbledore telling Hagrid to gather Harry Potter, to be sent to the Dursleys. And then he heard Minerva confirm his thoughts on a certain person. He heard that the Dursleys were the worst sort of people to be ever left with a child.
He always knew that Petunia would end up being a monster.
He left immediately to go find the Potter's house in Godric Hollows. He will raise the boy. Only because he knew exactly what Dumbledore was condemning that boy too. A life filled with misery.
And he won't let that happen.