Remus had no idea that Gellert knew he was lovers with Sirius. Hell, he wasn't sure why Gellert had taken a gamble that Remus would even be interested in men. But right then...Remus somehow felt guilty for saying 'no' to Gellert as he watched him. "Thank you," he finally said, not sure how to take that. He knew Gellert was a mass murderer, a villain. And yet... he could so easily be twisted by this man.