"With time, you won't need it, but you should keep it on until then, and afterwards." He shrugged. "You might want to keep it because of how beautiful it makes you look."
Rabastan laughed. "Yes, we can leave that for later." He offered her his arm. "Let's get inside." When her hand rested on his arm, he started to walk toward his room. He didn't talk on the way there. He knew that Bellatrix would use the portraits as much as he did, and he might love her temperament, but that didn't mean he had to trust her.
When they reached his room, he opened the door for her and let her go in first, before closing the door after himself. He cast privacy spells, and then stood a few paces from her. "This is what we're going to do. I will cast hexes on you. Not the Cruciatus, but other hexes, just as painful, but they won't touch your mind. You aren't to block them. You're to cast the Cruciatus on me. As soon as you do it successfully, I will end the spell. You're ability to hurt me is what's going to make the pain stop. Do you understand?"