A ninja has his ways. [Telling her that he'd scrambled home to make this quickly doesn't seem terribly romantic and would probably make her feel bad he'd gone to the extra effort for her... so he intends to make the effort without her knowing.]

[Minako and amnesia have been pretty good for his maturity level, really.]

After all, I expected the two things anyone needs the most after such a long and busy day in this cold winter are warmth and sweetness. So there's some for you, and I'll get mine from your smile.