"There isn't," she assures him. "I get what you're saying. And I appreciate it, I do. But I wasn't having casual sex for the sake of having casual sex. I wasn't in a relationship and I honestly doubted that I would or could ever be in a relationship, but I still had needs, so. Now that I'm with you, that need is well taken care of. And the idea of having sex with anyone else..." She shrugs a little. "It feels wrong. Like, not necessarily morally wrong, just...it wouldn't be satisfying anymore. Because what we have is so important to me." She smiles. "I'm only interested in having sex with you."