Severus had not expected Lily to kiss him, he blushed and gave her one of his rare smiles. "What ever you want to do will be perfect." He wanted her to enjoy herself, he would do anything to make her happy even if that meant, as it seemed, letting her go.
He almost could feel his heart break, letting her go would not be something he would be able to do gracefully. He knew he would never be able to forgive Potter or their son that they took her away from him. One just could not argue with the future.
He squeezed her hand, "I would do anything for you, Lily. Anything at all." That was the truth, he thought he would even die for her if it was needed.