Oh man, Sakura should so not agree. It'd make her look toally naive, like she has no self-respect whatsoever.
I love her, she's my fav but for Sasuke to say something like this, so casually, as if he was simply catched by the spur of the moment Ah well, I like her, so, what does it matter anyhow. It'd be like marrying a complete strainger, nooooo!
Sakura, no, hit him squarely. Sasuke's got to set things straight with everyone, show that he's worthy her affections.
I really like your style, but that kind of thing would result in me losing my respect for Sakura.