Bro, never act cold toward your lover just for an act, never. That will just make the other anxious and tought they have done something bad. Worst part is, she didn't even apologize for that and it's even Sana who apologize for what exactly ? Because nothing it's Sana's fault here,all what happen is because of Ayane. Sorry but that's just tick me off when someone apologize for something they didn't do and also when someone didn't apologize even if their attitude was a bit shitty.