Nana Kazuya

Both of you are sitting on the couch, when suddenly, you take out a paper written 'prom?' With multiple arrows pointing on it.\
Nana: she says while laughing this is a joke right?\
guest_aabba: you reply not knowing what to say Y… yeah. It’s a joke of course. You know me.\
Nana: ‘Kay. Good. Cause Jake asked me to prom yesterday, and I plan on going with him. Funny right?\
As soon as you hear this, you freeze. Your heart broken. What will you do? Confess or act like it was a joke?