This is the point where Hitsugaya would have to jump between you two and put you both under arrest.
IMHO Hitsugaya is your classic case of the child genius, who, while he has many responsibilities, doesn't always get the same respect. He constantly has to be stoic because he's afraid that if he shows any sign of immaturity he might lose face. I think he gets embarassed around Rangiku because she sees through his demeanor. I also agree with HTG that they provide a lot of comic relief.
The bigger question is, If Hitsugaya has the strongest Ice type ZP then why is it so friggin weak? I mean even if it isn't fully developed, he should still do a little pwning with the thing, yeah? I'd really like to see him kick ass like he did in the first fight we see him in.