The second season has taken a nice fold where it seemed that Will shared food that seemed human flesh. Otherwise Hannibal would have known.
Will is trying to get close to hannibal but to achieve what really? Does he want hannibal to come forward and commit a murder in front of him and then to expose him to the whole world?
if so then Hannibal usually likes to watch others killing other people so this might not work out perfectly for Will.