Cole is so great and nice. I honestly think the first time she offers to him, he might refuse. Not that there is anything wrong with Cole, but there is nothing wrong with her, if you know what I mean. At least if she is offering to let him actually drink from her. She is going to be with Clary, and Billie is gone, I can see him being worried about being tempted. Oh yeah...bloodlust would effect aura, demeanor, reactions, temperament, and thoughts altogether. It's like going through a withdraw that can kill you.

Oh I can see how this could be a big problem.