"Oh, I certainly agree." Merlin nodded. "I am not one who often frequents ladies of the night myself, but I found her attention to be something altogether different. And I think she had an interest, perhaps not in me (I would not be so arrogant), but in my library, which I could offer her access to, if she wished it." He wasn't sure how much Peitho cared for her ward's interests, but she must have some emotional investment in it.
"I have to admit to you that I have many strengths, but one great weakness, and that is beautiful, talented, intelligent women, such as yourself." It never hurt to throw in some flattery. "If we could see fit to make some sort of regular arrangement, I have a lot of skills at my disposal."