[quote=@Briza]
Although, In his defense, I think he might simply be a Nervous Flirt, and he has no [b]Off-Button[/b]. 
[/quote]
lmao that is great
True, though I was considering more his range of poison-making and her more specific type.
I doubt she wouldn't ever not be a bit blushy about it, but she would always politely decline/refuse to engage in flirting back. Besides, she's a good 10 years older than him. She might make a small "it would never work, darling" remark sometimes and not try to dissuade his flirting exactly, but...well. Her husband has no worries about her.