I think Naruto and Hinata would be a funny cute couple. Lets say they are together, Naruto wraps his arms around Hinata, Hinata would turn red and be out of it for the next week.
Just imagine how Naruto would act and how she would react. Another couple I'd have to say agian Amu and Ikuto. Ikuto is the flirty type of character, there's a funny part where Amu asks Ikuto what his dream is, so he tells her to get close to him so he can tell her in her ear. Instead he bite's her ear.
I think that was a cute funny moment between them.
Hmmm... I'm still thinking of others....