>>2987180Amu never dated Tadase. Amu honestly never chose one over the other. Ending basically is:
Teacherdude and Utau's manager get married, they throw the bouquet, Amu catches it, she falls, both Ikuto and Tadase catch her. Most of the final chapter had her interacting with Ikuto though. I like to think he wins. And yes, he left to find his dad but came back for this chapter.