[He feels like such a heel for bringing it up. Even if it's the truth, it hurts him. And with Sayaka's movements, he begins to really feel like he messed up.]

M- Maizono-kun...? Are you sure? [He picks up his pace to try to catch up with her.]

It... it may not technically be false, but it is still not something that should be said aloud! I did not want to upset you... [But he still did. His hopes of a lovely and pleasant walk with Sayaka are ruined now.]