[Ah this is just going to end badly. This is such a specific question, Fai knows he's going to get called out on it. But he can't go without blood much longer, and getting called out on this would be better than making Syaoran watch him die.
Still, he puts on a smile to try to deflect some of the seriousness away from the subject.]
Mm, something like that! Could only feed from one person, only wanted to feed from one person. It might be the same thing, yeah!