Another visitor

After Gilly left, Robb met with Sansa to have dinner, then went back to his room, where he was welcomed by the Red Woman sitting in a chair. She looked at him with a mysterious expression, apparently not concerned about coming into his room without invitation. "Lord Stark."
Robb, not willing to offend the King's most important advisor, just nodded. "Lady Melisandre, to what do I owe the pleasure?"
She gave him one of her smiles, neither warm nor cold, just distant and reserved. "We have spoken before about the Lord of Light."
Robb sighed and sat down on his bed. "You want me to convert."
"You are a warrior, and a ruler", Melisandre said. "You know how to fight, and what it means to be responsible for others. You do not strike me as a man who cares much about ecclesiastical rites and theological texts. Why do you worship the Old Gods?"
Robb knew there was no point in pretending. "That is just what we do in the North. We have always prayed to the Old Gods of the Forest, and they have protected us. Why risk anything?"
"You know the true war is still to come, Robb. You know what waits in the North. You know that winter is coming, and who brings it. Your half-brother has seen it. The Long Night is upon us."
Hearing her say his first name was chilling. Robb looked at her, and the evening sun coming through the window made her hair and her eyes glow in copper red. Robb suddenly felt warm, like someone had lit a fire in the room. He wasn't sure if there was some magic going on, or if he had just looked at Melisandre's breasts a bit too long. She was beautiful, he almost couldn't take his eyes off her. Was she bewitching him now? He needed to keep a clear head.
Suddenly, she stood up and made a few steps towards him. "Do your gods matter more to you than your sister?"
Robb **** his gaze away from her voluptuous body. "What do you mean?"
She smiled, this time more dangerously, with fire in her eyes. "No marriage is more divine than the sacred union between brother and sister. Yet your Old Gods, just like the Seven, would shame you for it."
Robb opened his mouth, but she put her hand on his chest. "You do not need to be ashamed. Listen to your heart. You love Sansa, there is no sin in that. But without a Red Priest, you could never marry her. Do you want to live a lie for the rest of your life?"