not really, there were instances that kaname would get a "taste" of yuuki's blood like from that scene at the... party i guess...(a blurry recollection of what had happened lol)but then zero ended up pointing a gun at his head(badass huh... i know
).
also, for zero's part, a guy turning into a
level E "sucker"(lowest of the low
), having a "tasty" girl beside you day after day (like a couple dating would be a fair analogy) could be really tempting for a guy that was slowly turning into a Level E SUCKER to have a high resistance(even though he
cared for the girl) to blood in contrast to kaname, a "high-breed" of a vampire (an ancestor desu~) that have more self control and had already constructed such a "wonderful plan" for all of them is like comparing a "normal" person and a "kleptomaniac" inside a room full of jewelry w/o any clerks attending to them.
even the other guys(and gals) of the night class haven't done anything to the day class that would involve drinking a "tomato juice" from those "packs". what more if it was our all-mighty kaname-sama
and what kind of a high class vampire drinks/sucks(yup! the generice sucking of anothers blood because of "thirst") the blood of another hi class vampire right??
(providing that kaname knew all along that yuuki the cutey is the true heiress of that vampire yakuza clan
)