Yes indeed, I wish it had been in the manga's. I'd be so funny to see Inner Sakura say "GET OFF MY MAN DATTE BAYO!"
Well, Naruto has to pay team Asuma's party bill. That could be a chance for a misunderstanding (classic cliche) if Ino goes to Naruto and remembers him about the deal.
Something like this:
Ino: Hi Naruto. I finally found you.
Naruto: What is it, Ino?
Ino: You remember the deal, right?
Naruto (shocked, then he gets depressed when he remembers about Choji)
Sakura: What deal?
Naruto: You see, Sakura-chan...
Ino: Today is his treat. Come on, Naruto. Let's hurry.
Naruto (walking depressed, thinking about how much he will have to pay for Choji's meal): Yeah... Yeah...
Sakura thinking: "Naruto and Ino.... His treat?"
...
You can figure out the rest.