I'm always kinda baffled by those manga couples that don't do any PDAs, which makes not much difference with how they were before becoming official. Spending months not kissing, not holding hands, not hugging, not even telling others they're an item, let alone having se-.
Live a little, you cherries!
Ume even got it wrong briefly when she said that 'Sakurai-san belongs to everyone'. He's his own person, no matter how kind he is, and no, he belongs to you! You have to be self-centered to allow yourself to be happy, and it's not the same as being selfish. It's not negative it's natural.
Anyway, this was a lovely story. I'll wonder often 'What would Sakurai do?' and can only hope to live up to such a great model.